Question: When is Constance Of France, Princess Of Antioch's mother's birthday?
Sentence (from "Bertha of Holland"): Bertha of Holland (1055 – 15 October 1094), also known as Berthe or Bertha of Frisia and erroneously as Berta or Bertrada, was queen consort of the Franks from 1072 until 1092, as the first wife of King Philip I. Bertha's marriage to the king in 1072 was a result of peace negotiations between him and her stepfather, Count Robert the Frisian of Flanders.
Relevant evidence: Yes