Robert McCreath, grocer and spirit dealer in Elderslie, married Janet Aitchison in Paisley on 30 November 1805.

They had a family of eleven children – only two of whom were sons.

John McCreath (1806-1878) Married (i) Janet Wilson (ii) Margaret Algie.

Ann (Annie) McCreath (1807-1901) Married George Caldwell.

Agnes McCreath (1809-??) No biographical information.

Janet McCreath I (1810-bef. 1811) Died in infancy.

Janet McCreath II (1811-1885) Married John Steel.

Helen McCreath (1816-1880) Married James Lang.

Mary McCreath (??-??) No biographical information)

Jean (Jane) McCreath (1818-1886) Married John Jardine.

Robert McCreath (1821-1896) Married Charlotte Renton

Marion McCreath (1824-1916) Married William Buchanan

Isabella McCreath (1825-1905) Married William Patrick