Longan family genealogy
Arms: Vert three lions ramp. or.
BREASAL, brother of Beice, king of Orgiall who is No. 98 on the "Magellan" pedigree, was the ancestor of O'Longain; anglicised Long, Longan, Langan, and Langhan.
98. Breasal: son of Cumascach.
99. Fiachnach: his son.
100. Longan ("long:" Irish, a ship; "an," one who): his son; a quo O'Longain.
101. Eiteach: his son.
102. Eachagan: his son.
103. Eatach: his son.
104. Giollachriosd O'Longan: his son.