Amalie of Oldenburg   (middle name Frideriki)   (f)   1818-1875  
Other Royalty   1836-1862   Greece   (queen consort)
Friederike of Hanover   (a.k.a. Frideriki)   (f)   1917-1981  
Other Royalty   1947-1964   Greece   (queen consort)
Sofía of Spain   (middle name Frideriki)   (f)   1938-  
Other Royalty   1938-1962; 1975-2014   Denmark; Greece; Spain   (princess/queen consort)