In her "Maughold " book Constance says that Cashins
[& variants] are in Maughold register 1669-1845 & their
descendants were Corkills. Blacksmithing was a typical
Corkill trade & a Ballasloe property stayed in that family
ownership till 1960's.
However distant I think this was a connection to
Ballasloe & the only Kerruish memory of an abode in
Maughold before leaving for elsewhere through Jane Cashen or family members.