In the book of "Marriages of Patrick County, Va., 1791-1850" Malinda J. Allen, daughter of Lucy Allen of Floyd Co. & George Martin, md. Dec. 14, 1849, his parents aren't given.
I haven't looked at the census for Franklin County in 1830, but Preston Allin is named in an index for that time and is supposed to be on page 45 of the census. Preston is living alone in Kanawha County in 1840, I don't know where Lucy and the kids are then.
Preston is missing in 1850, Lucy & four children and George & Malinda Martin are living close to one another in Patrick County.
Yes, Lucy and John Walker are still in Patrick County in 1880, it is unknown how and when Lucy went to Kansas. John Walker may have died in Virginia. It seems that Creed was the only one of Preston and Lucy's children to remain in Patrick County.
I wonder where George and Malinda were between 1850 and 1880? You say they showed up in Putnam County in 1880, do you mean the one in West Virginia? Please let me know the township and page number. Is that also where John Martin lived?