https://www.findagrave.com/memorial/133937325/david-blair-wilsonGives a date of birth of 19th April 1829Not much help, I know
Difficult to find in earlier censuses but there is this chap:1871 2 E Maitland Street, EdinburghDavid Wilson , 42 yrs b Larbert, Stirlingshire , Veterinary Student & Lodging House KeeperMargaret Wilson, 40 yrs, sister, house keeper, b Larbert