James McCreath married Mary Morton on 5 December 1852. Mary died at Kilmarnock (age 45) on 20 July 1860. Cause of death Pthisis. She is buried at High Church Burial Ground Kilmarnock.
They had four children:
Jane Morton McCreath born 1835. Married John Law
Alexander McCreath born 1836. Married Mary McKechnie
Marion McCreath born 1840. Married Luke Tait on 17 April 1860, Tradeston, Glasgow.