Asens in Byzantium
Abraham Asen Palaiologos
Son of Michael Asen and grandson of Yoan III Asen; brother of Yaroslav. He belongs to the Serbo-Byzantine branch of the family in the first half of the 14th century.
Biography
Avraam Asen Palaiologos was a son of Michael Asen and a grandson of Tsar Ivan Asen III (John III Asen), a brother of Yaroslav. He belonged to the Serbo-Byzantine branch of the family, settled there after his father's emigration to Serbia.
His name, together with that of his brother Yaroslav, is preserved in marginal notes in the so-called Saray Codex of the Octateuch — one of the few testimonies to this second generation of Asens, born around 1305–1310.
Sources
“Ярослав (следователно и Авраам?) е син на Михаил [Асен, II, № 4].”
— Genealogy and Prosopography of the Asen Dynasty 1186–1460, p. 292