English princess, daughter of Henry I. She was Henry's only legitimate child and was named his heir in 1127. In 1135 her father died and Matilda was forced to flee when his nephew Stephen seized the throne. Her claim was supported by King David I of Scotland, and she and her half-brother Robert, Earl of Gloucester (died 1147) invaded England in 1139. She waged an unsuccessful civil war against Stephen and eventually left England in 1148. Her son became Henry II.
Subjects: British History.