His brother was John, who was father to
Gideon Ouseley and grandfather to major-general
Ralph Ouseley. Ralph himself had several children by two wives. By his first wife Elizabeth Holland of Limerick (whom he married on 1 April 1763) he had three daughters and two sons,
William who became an
orientalist and
Gore who became a
Baronet. Elizabeth died on 28 November 1782, and he took a second wife, Mary Collins, with whom he only had 1 surviving child,
Joseph Walker Jasper Ouseley who also became an orientalist. He lived in
Limerick and in
Dunmore, County Galway. == Antiquarianism ==