TRH the Duke and Duchess of Bragança, Infante D.Diniz, duke of Oporto, Infanta D. Maria Francisca, duchess of Coimbra and her fiancé Duarte de Sousa Araújo Martins, attended a mass at the Royal Basilica of Mafra, to celebrate the offer of a relic that belonged to the Blessed Emperor Karl of Habsburg.

There were also present monks from the Cistercian Abbey of Heiligenkreuz in Austria.

https://monarquiaportuguesa.blogs.sapo.pt/familia-real-na-real-basilica-de-mafra-1142712

Infanta D. Maria Francisca and Duarte Martins will be married in Mafra next October 7th.