From The Blazon of Gentrie by Sir John Ferne (1586) p218
Blazon: Gules two lions passant guardant or
According to Ferne, this was the coat of arms of England during the reigns of William the Conqueror, William II, Henry I, and Henry II, about 1066-1189. It is unclear if he recognizes Stephen or Matilda as rulers of England. It should also be noted that Henry II probably did not use this coat; it seems more possible that he bore gules, a lion rampant or, or a variation thereof, though sources are rare.