Margaret Jane Horsley

William married, secondly, Margaret Jane Horsley, daughter of Captain Nicholas Horsley, on 6 April 1842 at Norfolk Island. They were separated in February 1863 by decree of the Court of Divorce.

William and Margaret Horsley had the following children.

1. Hon. Henry Hartstonge Pery - b. 2 Sep 1843, d. 28 Sep 1919 (aged 76 years)
2. Hon. Edmund Aubrey Templar Pery - b. 6 Jan 1845, d. 9 Oct 1924 (aged 79 years)
3. Lady Alice Louisa Pery - b. 23 May 1846, d. 15 Sep 1876 (aged 30 years)
4. Hon. Cecil Standish Stackpole Pery - b. 23 Nov 1847, d. 6 Jun 1935 (Lived in Queensland, Australia) (aged 88 years)
5. Hon. John Sexton Pery - b. 15 Jun 1849, d. 19 Sep 1921, (aged 72 years)
6. Hon. Harry de Vere Pery - b. 2 Jun 1851, d. 1 Sep 1935, (aged 84 years)
7. Hon. Neville Calder Pery - b. 12 Dec 1852, d. May 1896, (aged 43 years, unmarried)