Can you see where David was born on Post #4. The last bit is a bit hard to read.
Just found this in my Paper files.
1851 finds them at 6 Chatham Court Leeds, John, 40 is now a Fluff Dyer, born Scotland, Dumfries. John, Mary and David all have been put down as being born Dumfries. David is now a Plasterer. Surname spelled Laurie
I am happy with the Children of John And Mary. Just need to sort out which John and Mary.
All the marriage certificates give John Laurie Dyer as Father.