Hi Tony,
The highlighted Corkill wills are the ones which have been transcribed by someone, usually researching their own families. Brian Lawson, who compiled the index and included the LDS film numbers, aimed to get all of them transcribed eventually as a joint effort from all Manx researchers. If you are able to borrow those films I suggested your transcripts could add to the collection!
Brian donated his indexes to the FHS before he died: www.iomfhs.im/lawsons/LawsonBMD/Main_Site_index.html
but there have been problems adding new transcripts to his original list. In the meantime Ian Radcliffe collected new transcripts while waiting to move them to the main list. See: www.mannincloud.info/ and Jim Smith has collected both Ian's holdings and his own transcripts on to an alphabetical list here: www.jurbyjim.com/IOM/The_Manx.html
I think the transcript of the will of Esther Corkill (Cannell) was one of mine. They are part of the Ards family.
I'll have a look at Robert son of Robert and Judith Colquitte - I think I missed that one.
Sue