 Some of Seán's notable descendants included


Seán's brother was Conchobair Ó Maolalaidh
who became successively Bishop of Clonfert (1447–1448), Emly (1448–1449) and Elphin (1449–1468).John Lally, inventor of the Lally column, was born at Kilbannon, Tuam, in 1859.Irish stage and screen actor Mick Lally (1945–2010) was a native of Toormakeady, north-west of Tuam.