It has been reported the sudden death of "Prince Harald of Hohenzollern-Emden" due to a heart attack.

The "Prince", aged 63, died in Namibia and was named the Diamant Prince as he worked in that branch: gems, precious stones and mines.

Last year, he married Josepha Schmid, who answers these days as Princess Josepha von Hohenzollern, a member of the german FDP party.

Josepha, aged 51, is expecting her first son in early July !
She has just presented herself to Mayoress of Leonberg town.
https://www.bild.de/unterhaltung/royals-adel/leonberg-diamanten-prinz-harald-von-hohenzollern-tot-685bcfc3a88b2e4c192ca533


Though it is always tragic to loose her husband and father's son in such a trying moment, my question is : Who is this "Prince Harald" ?

The second branch of the Hohenzollern-Sigmaringen family, issued from Pr.Franz-Joseph (1891-1964), uses the surname Hohenzollern-Emden, but I can't find anyone named Harald, namely on P.Theroff's files.

Remains the question. Who was he ? Fake Prince ? Bought the right to use the name ? One of those "adoptions" so current in Germany ?