Hello Pamela,
Here is some more information I have found, which gives you the MOTHER of Joney - and her siblings, you should be able to trace their Baptisms to find out their FATHERs name - then find the marriage of their Parents - ? Christian and Mary ?
Extracts from: A Manx Note Book CD.
Wills.
Lonan.
1805-1 E CHRISTIAN Mary d 30 apr 1805;ch james, robt, philip, isabel, elinor + joney; all of age; wm cottiman h/o joney, philip christian h/o isabel, wm kelly h/o elinor.
Land Records.
Lonan South Side Sales.
SSS May 1787 55 Tho Cottier Wm Cottiman.
Parochia St Lonnan.
This book covers 1797-1816.
Grettest.
3 John Skillicorn 7s 6½d
Wm Cottiman Ma [] [Crellin ? blotted] 12s 5½d 0 14 0.
Averil