I am trying to trace Kennedy ancestors who were last listed in the 1851 Census in Catrine, Ayrshire. They are Janet b. 1829, Margaret b. 1833 and their brother William b. 1835. These siblings were all born in Kilmarnock. Janet and Margaret were both power loom weavers and William was a tinsmith. Their parents were David Kennedy b. 1799 and Margaret (Maggie) Cowan b. 1805. Any help would be greatly appreciated.