Sir Robery Croc of Crookston Castle held lands in Neilston in the 12th century .
Sir Robery Croc of Crookston Castle is thought to have held a castle that may have been at Cowden .
Sir Robery Croc of Crookston Castle held lands in Neilston in the 12th century and is thought to have held a castle that may have been at Cowden .