Hello, I am hoping to find some information on my family. From what I have read so far in these threads, I have found the right place

It seems quite a few people doing research on this family hit a road block when it came to John Sellers. No one has been able to get past these two people.
Here is the information I do have:
John Sellers (Sellars) b. abt 1790 Maybole, Ayrshire
married to Mary McKay (Mackey) b. abt 1788 Craigie, Ayrshire
They had a son named Henry Monteith Sellers b. Nov 22 1819 in Carluke, Lanarkshire.
(So, at some point it seems they moved)
Thank you kindly for any help you are able to give.