Rainald I Masoir

Rainald I Masoir, also known as Renaud I Masoir (died around 1135), was constable of the Principality of Antioch from around 1126, and also baillif (or governor) of the principality from 1132. Although he was a prominent military commander and held important offices, most details of his life are unknown. He received his first estates in the southern regions of Antioch in the 1110s. He made the strong fortress of Margat the center of his domains. He regularly witnessed the Antiochene rulers' diplomas from the 1120s. He was most probably still the actual ruler of the principality when he died.