Ademar is a masculine Germanic name, ultimately derived from Audamar, as is the German form Otmar. It was in use in medieval France, Latinized as Adamarus, and in modern times has been popular in French, Spanish and Portuguese-speaking countries. A feminine form Adamardis seems to have been in use from the 10th century, reduced to Aanord, Aenor by the 12th.
Medieval:
Ademar de Chabannes (d. 1034), French monkAdemar Jordan (d. 1212), French knightGuilhem Ademar (d. 1217), French troubadourAdemar lo Negre (d. 1219), French troubadourModern:
Ademar Caballero (born 1918), Brazilian swimmerAdemar José Gevaerd (born 1952), Brazilian ufologistAdemar Benítez (born 1956), Uruguayan footballerAdemar Marques (born 1959), Portuguese footballerAdemar da Silva Braga Júnior (born 1976), Brazilian footballerAdemar Rodríguez (born 1990), Mexican footballerAdemar Tavares Júnior (born 1980), Brazilian footballerAdemar dos Santos Batista (born 1983), Brazilian footballerAdemar Aparecido Xavier Júnior (born 1985), Brazilian footballer