Kayqubad I
Around 1200, when the deposed Seljuk sultan Kaykhusraw I () came to Constantinople, Maurozomes held, according to the Seljuk chronicler Ibn Bibi, the rank of "Caesar" in the Byzantine court. During his stay in the Byzantine capital, Kaykhusraw was apparently baptized a Christian with Emperor Alexios III Angelos () as his godfather, and married Manuel's daughter; thus Manuel became the ancestor of the Seljuk sultans Kayqubad I () and Kaykhusraw II ().