Rosa Roberta Onslow (died 1854) (1807–1854) Parents Alexander Macleay Children Arthur Alexander Walton Onslow Francis Montgomery Onslow Alexander Onslow Guildford MacLeay Onslow Siblings Christiana Susan Dumaresq George Macleay William Sharp Macleay Margaret Innes James Robert Macleay Partners Arthur Pooley Onslow