These two Drain's you are referring to are my GGG Uncles. They are the sons of Daniel Drain (about 1783-1860) and Jeanette Templeton (about 1779 - 1866) who are from Campbelltown, Argyleshire, Scotland. Thomas and Daniel also had a brother, Duncan (1817-1905) who is my GG grandfather. He was married to Catherine Greenlees (1827-1918). They also had another brother, John who died in 1864 and a sister Catherine who married David Ferguson.