About John Clerk-Maxwell, of Penicuik, 5th Baronet
Sir George Clerk Maxwell died in 1784, and was succeeded by his eldest son, Sir John, who married Mary Dacre, but died without children in 1798...
Source: The life of James Clerk Maxwell:with a selection from his correspondence and occasional writings and a sketch of his contributions to science (Google eBook) By Lewis Campbell, William Garnett Macmillan, 1882
From p. 16..
- Biographical index of former fellows of the Royal Society of Edinburgh, 1783-2002, pt. 1. A-J, page 190