Old English name reinforced by its Norman cognate, from the Germanic elements Proto-Germanic*ermunaz (“all,whole”) + *gardaz (“enclosure”), "strong protection". Cognate with the German saint's name Irmgard.
The Bearded, son of Geoffrey, count of Gatinais, and of Ermengarde, daughter of Fulk Nerra.
In 1186 at Woodstock William married Ermengarde de Beaumont, a cousin of Henry II., and peace with England being assured three years later, he turned his arms against the turbulent chiefs in the outlying parts of his kingdom.
(1198-1249), king of Scotland, son of William the Lion and Ermengarde of Beaumont, was born at Haddington in 1198, and succeeded to the kingdom on the death of his father in 1214.