List of European Jewish nobility
https://en.wikipedia.org/wiki/List_of_European_Jewish_nobility

List of British Jewish nobility and gentry https://en.wikipedia.org/wiki/List_of_British_Jewish_nobility_and_gentry

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The Royal Family’s 800-year relationship with Britain’s Jews,
in 7 historical tidbits
By Robert Philpot 
As the UK’s chief rabbi and Israel’s president attend King Charles’ coronation this Shabbat, a look at the ties that have historically bound the Crown to its Jewish subjects
https://www.timesofisrael.com/the-royal-familys-800-year-relationship-with-britains-jews-in-7-historical-tidbits/

Regno Unito di Israelehttps://it.wikipedia.org/wiki/Regno_Unito_di_Israele

History of the Jews in Italy https://en.wikipedia.org/wiki/History_of_the_Jews_in_Italy