John Erskine, 4th Baron Erskine

[5] His maternal grandparents were John Cadwalader, an American general during the Revolutionary War, and his second wife, Williamina Bond (a daughter of Dr. Phineas Bond, of Philadelphia and niece of Dr. Thomas Bond).

[6] Erskine was a member of the East India Company's Civil Service and had served as a Judge and Superintendent of Police in the Cis-Sutlej states.

[7] Upon the death of his elder brother in 1877,[7] he succeeded to the title, 4th Baron Erskine, of Restormel Castle in the County of Cornwall, which had been created for his grandfather on 10 February 1806.

[4] After her death, he married Maria Louisa Cullen Campbell, a daughter of Col. Alexander Campbell, on 25 January 1865 at Shinfield, Berkshire.

Together, they were the parents of:[4] Lord Erskine died on 28 March 1882 at Ettenheim House in Torquay, Devon and was succeeded in the barony by his son, William.