John McCreath (1745-??) married Agnes Lochead on 21 November 1778 at Renfrew. He was a wright and cabinet maker. The family resided at Elderslie.

They had 9 children:

Robert McCreath (1779-1850). Married Janet Aitchison (1782-1861)

Helen McCreath (1781-??) No biographical information.

Agnes McCreath (1783-??). No biographical information.

John McCreath (1788-1849). Married Margaret Park (1792-1855)

James McCreath (1790-??). Married Margaret Craig (??-??)

David McCreath (1792-??). Married Janet Martin (1791-1866)

Thomas McCreath (1794-??). No biographical information.

William McCreath (1798-1874) . Married Mary Sharp (??-1883)

Matthew McCreath (1803-??) No biographical information