Henry Haworth Newton Onslow (1852-1928) (1852–1928) Parents Matthew Richard Onslow Eliza Antonia Wallace Children unknown daughter Onslow Siblings Arthur Herbert Onslow Matthew Richard Septimus Onslow unknown daughter Onslow John Royds Denistoun Onslow William Wallace Rhoderic Onslow Alice Constance Kathleen Onslow Amelia Francis Onslow Edith Mathewanna Onslow Partners Mary Martin