Kissaage is a somewhat earlier form of name.
the late Revd Rex Kissack wrote "Seed of Isaac" in 1983 (long out of print but was put on web sometime so maybe a search will locate it)
he places Margaret as daughter of John Kissack + Jane Kissage at Kerrowmoar Leayre.
John was son of Ewan Kissack + Christian Kewn born 1739
Ewan was son of Ewan Kissack and Catherine Christian born 1705
here his trail becomes a little less clear Ewan + cath m 1700 Catherine Christian d 1734 Ewan d 1741 and noted as old Sumner ; Rex places Ewan as son of William Kissage + 1st wife Margaret Crowe with Ewan born 1667 - Wm d 1683;
Wm was son of Edward Kissage d. 1671 + Jane Woods d.1665
Edward was son of Wm Kissage + possibly Katherin Charrin (2nd wife was Kath Crowe) Wm d 1654 with Edward born 1609.

This appears to be derived from Land records as they owned Kerrowmore ["large quarter"] from earliest records

(some of these records will be on my ManxNoteBook CD
see www.manxnotebook.com

Wm Fargher still to be researched