John James Onslow British Royal Navy officer (1796-1856) (1796–1856) Parents Anne Mitchel Sir Richard Onslow, 1st Baronet Children William Lake Onslow Anne Theresa Onslow John James Onslow Charles Thomas Forrest Onslow Richard Henry Onslow Agnes Mary Onslow Siblings Harriet Onslow Frances Onslow Sir Henry Onslow, 2nd Baronet Matthew Richard Onslow Anne Onslow Elizabeth Onslow Partners Lavinia Dinning