January
4th, 35th birthday of Olympia Grafin von Arco-Zinneberg, Princess Napoleon
5th, 85th birthday of King Juan Carlos I of Spain
11th, 100 years ago the death of King Constantine I of the Hellenes
13th, 90th birthday of Princess Marie Louise of Bulgaria, sister of Simeon II, King of the Bulgarians
15th, 55th anniversary of the death of Princess Dona Maria Francisca of Orléans-Braganca, Duchess of Braganca
15th, 50th birthday of Saskia, Fürstin consort zu Hohenlohe-Langenburg
19th, 80th birthday of Princess Margriet of the Netherlands
20th, 50th birthday of Mathilde, Queen consort of the Belgians
20th, 10th birthday of the Prussian twins Carl-Friedrich and Luis-Ferdinand
24th/February 8th, 20th wedding anniversary of Prince Alexander (nephew of the Fürst) and Princess Astrid of Liechtenstein
26th, 150 years ago the death of Amélie of Leuchtenberg, Empress consort of Brazil
31st, 85th birthday of Beatrix, former Queen of the Netherlands
February
2nd, 80th birthday of Princess Marie Beatrice of Italy, daughter of the last King
6th, 50th anniversary of the death of Infanta D. Maria Antonia of Braganca, Mrs Ashley Chanler
7th, 100 years ago the birth of The Honourable George Lascelles, later 7th Earl of Harewood (first cousin to the late Queen Elizabeth II of England)
12th, 70th birthday of Prince Alexander of Afif, clairmant of the headship of Saxony
22nd, 90th birthday of Katharine, the duchess of Kent
24th, 60th birthday of Prince Carlo, Duke of Castro
28th, 70th birthday of Irina, born princess of Romania and daughter of the last King
March
2nd, 60th birthday of Archduchess Isabella of Austria, granddaughter of the last Emperor
3rd, 90th birthday of Duke Alexander of Württemberg
3rd, 50th birthday of Prince Charles-Philippe of Orléans, Duke of Anjou
4th, 150 years ago the death of Prince August of Sweden, Duke of Dalarna, and brother of King Oscar II
7th, Silver wedding celebration of Count Ingolf and Countess Sussie of Rosenborg
9th, 60th birthday of Lord Ivar Mountbatten, second cousin of King Charles
10th, 160 years ago the wedding of Albert Edward, Prince of Wales, and Princess Alexandra of Denmark
10th, 100 years ago the birth of Prince Oluf of Denmark, son of Prince Harald
10th, 10 years ago the death of Princess Lilian of Sweden
11th, 100 years ago the birth of Prince Welf Heinrich of Hannover
11th, 80th anniversary of the death of Infanta D. Marie José de Braganca, Duchess in Bavaria
12th, 60th birthday of Prince Sergius of Yugoslavia
12th, 60th birthday of Princess Helene of Yugoslavia
12th, 60th birthday of Farahnaz Pahlavi, daughter of the last Shah of Iran
12th, 60th birthday of Felix, Fürst zu Hohenlohe-Waldenburg-Schillingsfürst
18th, 40 years ago the death of Umberto II, last King of Italy
21st, 80th birthday of Prince Andreas of Saxe-Coburg und Gotha, first cousin to the Swedish King
27th, 75th birthday of Prince Harald zu Schaumburg-Lippe
27th, (rel May 2nd), silver wedding anniversary of Archduke Carl Peter and Archduchess Alexandra of Austria
30th, 160 years ago since Prince George of Denmark became King of Greece
30th, 85th birthday of Friedrich Karl, Count of Schönborn-Buchheim, husband of Princess Isabelle France
April
1st, 60th birthday of Inaara Aga Khan, former Begum Inaara Aga Khan
1st, 30 years ago the death of Infante Juan, Count of Barcelona (Spain)
4th, 60th birthday of Cayetano Martinez, 4th duke of Arjona (Spain), son of late Cayetana, 18th Duchess of Alba
5th, 90th birthday of Princess Marianne von Sachsen-Coburg und Gotha, Mrs Michael Nielsen, first cousin to King Carl Gustaf of Sweden
5th, Silver wedding celebration of Princess Marie-Esmeralda of Belgium and Sir Salvador Moncada
7th, 60th birthday of Jaime de Marichalar, former brother-in-law of the King of Spain
9th, 70 years ago the wedding of Prince (later Granduke) Jean of Luxembourg and Princess Josephine-Charlotte of Belgium
11th, 70th birthday of Countess Charlotte of Rosenborg, granddaughter of Prince Harald of Denmar
12th, 20th wedding anniversary of Prince Laurent and Princess Claire of Belgium
16th, 70th birthday of Penelope Knatchbull, Countess Mountbatten of Burma
16th, 60th birthday of Prince Hermann of Leiningen, nephew of Simeon II, King of the Bulgarians
23rd, 100 years ago the wedding of Prince Albert, Duke of York and Lady Elizabeth Bowes-Lyon
23rd, 100 years ago the death of Louise, Grand Duchess consort of Baden
24th, 100 years ago the death of William Ernest, last reigning Grand Duke of Saxe-Weimar-Eisenach
24th, 60 years ago the wedding of Angus Ogilvy and Princess Alexandra of Kent
24th, 40th birthday of Princess Iman bint Hussein of Jordan, half-sister to the present King
25th /May 17th, 20th wedding anniversary of Donatus and Floria-Franziska, Prince and Princess of Hessen
26th, 50th birthday of Isabelle, Dowager Fürstin consort zu Wied, mother of the present head
May
1st, 60th birthday of Prince Guillaume of Luxembourg
3rd, 90th birthday of Birgitta Straehl, granddaughter of Prince Wilhelm of Sweden and Grand Duchess Maria of Russia
6th, 100th birthday of Archduchess Yolande of Austria, daughter-in-law of the last Emperor and Empress of Austria
6th, 100 years ago the birth of Princess Galyani Vadhana Mahidol, paternal aunt to the present King of Thailand
8th, 20th birthday of Moulay Hassan, Crown Prince of Morocco
11th, 60th birthday of Sangay Choden, Queen Mother of Bhutan
12th, 100 years ago the birth of Countess Gunnila Wachtmeister af Johannishus, later Countess Gunnila Bernadotte, second wife of Count Carl Johan Bernadotte af Wisborg
14th, 70th birthday of Norodom Sihamoni, King of Cambodia
20th, 70th birthday of Eleonora, Princess consort of Ligne
21st, 10 years ago the death of Count Christian of Rosenborg, first cousin to Queen Margrethe of Denmark
24th, 15th anniversary of the wedding of Prince Joachim and Princess Marie of Denmark
25th, 85th birthday of Baroness Alix von Miller zu Aichholz, née Countess zu Castell-Castell
26th, 55th birthday of Crown Prince Frederik of Denmark
29th/30th, silver wedding celebration of Prince Maurits and Princess Marilène of Orange-Nassau
30th, 80th birthday of Countess Birgitta Bernadotte, wife of Count Claes B, grandson of Prince Oscar Bernadotte
30th, 70th birthday of Archduchess Andrea of Austria, granddaughter of the last Emperor
31st, 100 years ago the birth of Rainier, from 1949 Prince of Monaco
June
1st, 40 years ago the death of Prince Charles of Belgium, Count of Flanders
2nd, 85th birthday of Princess Désirée, Baroness Silfverschiöld (Sweden)
2nd, 70 years ago the coronation of Queen Elizabeth II of the United Kingdom
3rd, 45th birthday of Suthida, Queen consort of Thailand
4th, 100th birthday of Yuriko, Princess Mikasa (Japan) (Sister-in-law of late Emperor Hirohito)
8th, 10th wedding anniversary of Princess Madeleine of Sweden and Christopher O´Neill
9th, 40th birthday of Princess Theodora of Greece
9th, 30th wedding anniversary of Naruhito and Masako, the Emperor and Empress of Japan
10th, 30th wedding anniversary of Abdullah & Rania, the King and Queen of Jordan
10th, 70th birthday of Countess Lynne of Rosenborg
18th, 40th wedding anniversary of Jean-Louis de Potesta and Princess Sophie of Hohenberg, first cousin to Grand Duke Henri of Luxembourg
19th, 200 years ago the wedding of Crown Prince Oscar (I) of Sweden and Norway and Princess Josephine of Leuchtenberg
20th, 60th birthday of Duke Eberhard of Württemberg, uncle of the present head
21st, 80th birthday of Prince Leopold of Bavaria, godfather of Prince Carl Philip of Sweden
23rd, 80th birthday of Princess Isabella of Savoy-Genoa
24th, 40th birthday of Albert, 12th Prince of Thurn und Taxis
30th, 40th birthday of Prince Malik of Brunei, son of the Sultan
July
2nd, 30th wedding anniversary of Prince Kubrat and Princess Carla-Maria of Bulgaria
3rd, 70th birthday of Charlotte, born princess of Liechtenstein and granddaughter of the last Emperor of Austria
3rd, 30th wedding anniversary of Alois and Sophie, Hereditary Prince and Princess of Liechtenstein
5th, 20th anniversary of the death of Princess Isabella of Orléans-Braganca, Countess of Paris
10th, 70th birthday of Hisako, Princess Takamado (Japan)
10th, 50th birthday of Christina, Fürstin consort zu Solms-Hohensolms-Lich
11th, 60th birthday of Princess Ghida Talal, her husband is first cousin to the present King of Jordan.
14th, 90th birthday of Franz, Duke of Bavaria
16th, 80th birthday of Helie, 10th Duke de Noailles (France)
17th, 60th birthday of King Letsie III of Lesotho
18th, 60th birthday of Ashley Hicks, second cousin to King Charles III
19th, 40th birthday of Ernst August, Hereditary Prince of Hanover
20th, 50th birthday of Haakon, Crown Prince of Norway
25th, 45th birthday of Diane Duchess of Cadaval and Anjou
31st, 40th birthday of Archduchess Marie-Christine of Austria, countess de Limburg Stirum, niece of the present Grand Duke of Luxembourg
August
3rd, 80th birthday of Princess Christina, Mrs Magnuson (Sweden)
3rd, 70th birthday of Duchess Helene of Oldenburg, sister of the present head
9th, 20th wedding anniversary of Count Moritz von Goess and Duchess Fleur of Württemberg
10th, 70th birthday of Princess Adelgunde of Liechtenstein, sister-in-law of Princess Marie of Orléans
12th, 85th birthday of Countess Karin of Rosenborg
14th, 50th birthday of Thyra, Princess Heinrich of Hanover
16th, 20th birthday of Countess Ingrid von Pfeil und Klein-Ellguth, granddaughter of Princess Benedikte of Denmark
19th, 50th birthday of Mette-Marit, Crown Princess of Norway
20th, 80th birthday of Baron Francois Xavier de Sambucy de Sorgue, husband of Princess Chantal of France
20th (rel Sept 17th), golden wedding celebration of Prince Georg (first cousin to King Charles III of the United Kingdom) and Princess Victoria of Hannover
20th, 20th birthday of Prince Gabriel of Belgium, son of the King
21st, 60th birthday of King Mohammed VI of Morocco
September
2nd, 60th birthday of Princess Miriam al-Ghazi, her husband is first cousin to the present King of Jordan
3rd, 80th birthday of Prince Franz Wilhelm of Prussia, former husband of Grand Duchess Maria Vladimirovna of Russia
6th, 100 years ago the birth of Prince Peter, later last king of Yugoslavia
6th/13th, 20th wedding anniversary of Philipp and Saskia, Fürst and Fürstin zu Hohenlohe-Langenburg
11th, Silver wedding anniversary of Prince Boris (nephew of Simeon II of the Bulgarians) and Princess Cheryl of Leiningen
12th (rel 15th), 100 years ago the wedding of Count Bruno d´Harcourt and Princess Isabelle of France
12th, 90th birthday of Princess Maria Christina of Bourbon-Two Sicilies, wife of Prince Casimir
15th, 50th anniversary on the throne of King Carl Gustaf of Sweden
15th, 50th birthday of Prince Daniel of Sweden
18th, 100 years ago the birth of Princess Anne of Bourbon-Parma, later Queen of Romania
25th, 40 years ago the death of Leopold III, King of the Belgians 1934-1951
25th, 20th wedding anniversary of Prince Emanuele Filiberto and Princess Clotilde of Savoy
26th, 80th birthday of Rosita Spencer-Churchill, former Duchess consort of Marlborough
26th/September 18th, 30th wedding anniversary of Marc-Victor Cunningham and Princess Charlotte of Luxembourg, first cousin to Grand Duke Henri of Luxembourg
October
3rd & 5th, 10th wedding anniversary of Prince Jaime and Princess Victória of Bourbon-Parma
4th, 80th birthday of Sophie Charlotte, Dowager Fürstin consort zu Wied
8th, 85th birthday of Madeleine Kogevinas, only daughter of Prince Carl Bernadotte (Sweden)
11th, 60th birthday of Prince Feisal of Jordan, brother of the present King
14th, 85th birthday of Farah Pahlavi, last Consort of the Shah of Iran
15th, 18th birthday of Prince Christian of Denmark
18th, 70th birthday of Maria del Pilar, born Archduchess of Austria and granddaughter of the last Emperor
19th, 60th birthday of Prince Laurent of Belgium
21st, 40th birthday of Marie Marguerite, Duchess of Anjou
22nd, 100 years ago the wedding of Prince Paul of Yugoslavia and Princess Olga of Greece and Denmark
24th, 100 years ago the wedding of Phillip Albrecht, Duke of Württemberg and Archduchess Helena of Austria
25th, 40th birthday of Princess Yoko of Mikasa, second cousin of the present Emperor of Japan
27th, 60 years ago the death of Berthold, Margrave of Baden
November
2nd, 85th birthday of Queen Sofia of Spain
2nd, 50 years ago the wedding of Prince Alexander of Yugoslavia and Princess Barbara von und zu Liechtenstein
3rd, 100 years ago the wedding of then Crown Prince Gustaf Adolf of Sweden and Lady Louise Mountbatten
4th, 30th birthday of Count Skipper of Rosenborg
8th, 85th birthday of Prince Casimir of Bourbon-Sicily
8th, 20th birthday of Lady Louise Windsor, niece of King Charles III of the United Kingdom
13th, 100 years ago the birth of Carl Castenskiold, grandson of King Frederik VIII of Denmark
13th, 80th birthday of Katharine, Ex-Crown Princess of Yugoslavia
14th, 100 years ago the death of Ernst August, Duke of Cumberland
14th, 75th birthday of King Charles III of the United Kingdom
15th, 160 years ago since Duke Christian of Schleswig-Holstein-Sonderburg-Glücksburg became King of Denmark
17th, 40th birthday of Princess Latufuipeka of Tonga, oldest child of the current King and Queen of Tonga
22nd, 80th birthday of Alexander, 7th Fürst Sayn-Wittgenstein
23rd, 50th birthday of Sofia, Duchess of Calabria
27th, 60th birthday of Princess Désirée of Hohenzollern, niece of King Carl XVI Gustaf of Sweden
27th, 60th birthday of Friedrich, Fürst of Solm-Baruth
30th, 80th birthday of Princess Katharina of Saxe-Weimar-Eisenach, former wife of Prince Emanuel Joseph of Hohenzollern
December
1st, 60th birthday of Karl, Graf von Solm-Laubach
7th, 45th birthday of Princess Bajrakitiyabha, daughter of the present King of Thailand
7th, 20th birthday of Catharina-Amalia, Princess of Orange
9th, 100th birthday of Christian, 4th Prince of Bentheim und Steinfurt (oldest living descendant of King Charles XIV Johan of Sweden-Norway, and King Christian IX of Denmark)
9th, 60th birthday of Empress Masako of Japan
11th, 80th birthday of Princess Claude of Orléans, former Duchess of Aosta
15th, 80th birthday of Princess Marianne of Baden, wife of Prince Ludwig of Baden, first cousin to King Charles III of the United Kingdom
20th, 60th birthday of Infanta Elena, Duchess of Lugo
23rd, 90th birthday of Emperor Akihito of Japan
23rd, 80th birthday of Queen Silvia of Sweden
23rd, 70th birthday of Grand duchess Maria of Russia
27th, 80th birthday of Olimpia Weiller, first cousin of King Juan Carlos of Spain
28th, 20th birthday of Vittoria princess of Savoy and marchesa d´Ivrea
29th, 40 years ago the wedding of Princess Caroline of Monaco and Stefano Casiraghi
31st, 70th birthday of Princess Silvia, Dowager Duchess of Aosta
Sources
Wikipedia
Gotha online
Genealogisches Handbuch Des Adels Fürstliche Hauser