Well, I wish I could connect with this family but I cannot.I am working with a completely blank canvas.This is what I know:
John T. Marr b: BEF 1820 d: 1838 in Louisville, Kentucky, married Sarah Erwin in 1827.She was born in Ohio in 1812.She marries Littleton West in 1840.She dies before 1890.John and Sarah have the following children: 1. George Wallace Marr b: 1832 in Louisville.d: 1870 in Louisville.George married Eliza Ann Roe. 2. Helen Elizabeth Marr b: 1838 in Louisville.Helen married a Jacob Etley/Elby.
I cannot go any further with this family at the moment.On the 1870 census, the census taker mark's George Wallace Marr's father as being foreign born, although he/she did not make that mark as deliberately as the other marks.
I wish I could provide you with help.That family looks like it has direct links to royalty across the pond!