William Frederick Barton Massey-Mainwaring British politician (1845–1907) (1845–1907) Parents Susan Elizabeth Barton Eyre Massey, 3rd Baron Clarina of Elm Park Children Siblings Hugh Barton Augustine Massey Anna Emily Massey Hugh Nathaniel George Massey Eyre Massey, 4th Baron Clarina Adolphus Henry Tuthill Massey Lionel Edward Massey, 5th Baron Clarina of Elm Park Isabella Susannah Adelaide Massey Partners Isabella Anne Lee-Mainwaring