1798 in episcopal wills book 1 (all Manx wills are on mormon microfilms)
children under 14 have supervisors or overseers appointed to protect their interests when they reach legal age (14) they can choose another supervisor/overseer

Greasy/Greasey as a sidenote is possibly not a place name as I first thought though there is a crot a greasy (croft of the cobbler) in Lezayre but may be a rendition of gresee Manx for shoemaker/cobbler