John McCreath, a Stone Mason, married Helen Gray. They had six children:

James McCreath born 27 November 1775, Mauchline

Thomas McCreath born 2 March 1777, Mauchline

Marrion McCreath born 1 August 1779, Mauchline

Janet McCreath born about 1780-81. Married Charles Robb

Elizabeth McCreath born 27 March 1785, Knockdon, Maybole.

Margaret McCreath born 13 May 1790, Knockdon Maybole

No further biographical information has been found.