Rosa Anna Onslow (died 1889) (d. 1889) Parents Denzil Onslow Sophia Lushington Children unknown daughter Onslow Siblings Denzil Onslow jnr Amelia Onslow William Onslow Selina Onslow Arthur Robert Onslow Louisa Onslow Julia Onslow Maria Onslow Henry Cope Onslow Frederick Onslow Anne Onslow Sophia Onslow Charlotte Onslow Emma Onslow Partners Guildford Onslow