Isaac Macinnes (McInnes) - Alice

Alice was born in 1889 at Nymagee. there is a birth for an Isaac McGuiness in Crookwell in 1848 but is he our Isaac?????
Also Annie lived in Camperdown Sydney after he died - which I can't find either - she later married a Mr Quigley I believe as Martin , Isaac and Annie's sons war records has a document attached with details of his mother's address etc/