Note 68 — Chapter IX · Place-name Stories
Reading edition
I say in that case, as this is not quite conclusive; for Welsh has an appellative ỻyr, ‘mare, æquor,’ which may be a generalizing of Ỻyr; or else it may represent an early lerio-s from lero-s (see p. 549 below), and our Ỻyr may possibly be this and not the Irish genitive Lir retained as Ỻyr. That, however, seems to me improbable on the whole. ↑