John Angelos of Syrmia

John Angelos
Governor of Syrmia
Reignc. 1227 – c. 1250
Predecessornew creation
SuccessorRostislav Mikhailovich (since the 1250s)
Bornc. 1193
Diedbefore 1250 (aged 50-55)
Noble familyAngelos
Spouse(s)Matilda of Požega
IssueMaria of Cayeux, and (possibly) Saint Helen of Serbia
FatherIsaac II Angelos
MotherMargaret of Hungary

John Angelos or Angelus (Greek: Ἰωάννης Ἄγγελος, Hungarian: Angelos János; c. 1193 – d. before 1250), also known as Good John (Greek: Καλοϊωάννης / Kaloiōannēs, Hungarian: Kaloján), was a Byzantine prince who migrated to Hungary, and served as governor of various southern regions, including Syrmia, from 1227 until c. 1250, during the reign of Hungarian kings Andrew II and Béla IV, who were his maternal relatives.