In 1071 the Seljuk Turks, who practiced this religion, defeated the Byzantine Army at the Battle of Manzikert
Throughout the 5th century various invasions conquered the 
western half of... [DOC] [TLE] Ottoman Empire - Oxford Islamic Studies Online [PAR] Called by the Turks Osmanls, after the name of the founder of the dynasty 
Osman I ... Byzantine Empire on behalf of the Seljuk Empire of Konya (Seljuks of 
Rum), ... after they defeated the Byzantine army at the Battle of Manzikert in 1071
.