The name appears to have been derived from Yussuf ben-Serragh, the head of the tribe in the time of Muhammed VII, Sultan of Granada (1370–1408), who did that sovereign good service in his struggles to retain the crown of which he was three times deprived.
the name appears to have been derived from yussuf ben-serragh the head of the tribe in the time of muhammed vii sultan of granada (1370–1408) who did that sovereign good service in his struggles to retain the crown of which he was three times deprived