William Campbell Onslow (1806-1880) (1806–1880) Parents Marianna Campbell Arthur Onslow Children Udea Marianne Moriaty Onslow George Manners Onslow Harrington Campbell Onslow unknown daughter Onslow Douglas Arthur Onslow Siblings Arthur Pooley Onslow Richard Onslow Charles Hamilton Onslow Henry John Hughes-Onslow Partners Anne Moriaty Douglas