The name Kerrowcruin is shown on the OS map included in your Manxnotebook reference for Glen Wyllin: I have a corn miller & farmer, address Kerrowcruin, Michael, at the 1901 census. The same man is miller at Mill Bank, Michael in 1891, and his father miller & farmer at Kerrowcruin in 1881 and 1871. At the 1861 census there is a different family at Kerrowcruin and no mention of milling.

Do you know if Kerrowcruin mill is Glen Wyllin mill by another name, or a different mill?