According to the chroniclers, George Sursuvul was a brother of Simeon I’s second wife, who was the mother of Peter I.
[1] After the death of Simeon I, he ruled Bulgaria (927-928) as a regent for adolescent Peter I[2] and his younger brothers John and Benjamin.
George Sursuvul retired from the regency after concluding a peace treaty with the Byzantine emperor Romanos I Lekapenos,[3] one of which terms was a marriage of George Sursuvul’s nephew Peter I to Byzantine Emperor’s granddaughter Maria Lakapenos (renamed Eirene).
George Sursubul, heading a delegation of Simeon I’s brother-in-law Symeon, Calutarkan, courtier Sampses, and numerous nobilities, met with Romanos I in 927 and concluded the peace treaty which ended the Byzantine–Bulgarian war of 913–927.
[5] George Sursuvul was a great uncle to Boris II of Bulgaria.