Pre 1624, all references are from Joyce Oates Wills work. 1603 Will of Callighoney Quale, EpW 1604E #041 (Vicar of Jurby) Witness.
1601 Will of Ebod Corteen. EpW 1601E #010 (vicar of Andreas) Witness. There are a lot of other references in a wide variety of parishes.
I have created a Spreadsheet database of all references (in the Isle of Man) to Casement over the past few years. I would be more than willing to send you a copy, for information, if you would like me too.