From the following old message by Peter Corlett (the e-mail address may be out of date) another choice for Margaret Jane's grandmother might be Kewley instead of Cannell:

Re Robert Corlett : This data on Robert corlett is incorrect. Margaret Matilda Quiggin actually married JOHN CORLETT not Robert, the date you have is correct. John was born in 1848 and Christened on 6 feb 1848 at Kirk Michael. Married on 24 Dec 1873 and died at Ballaspit on 9 Feb 1922. His parents were John Corlett and Eleanor Kewley. I have a short tree on this famaily which I am trying to expand, so if you require more data please email me Best wishes Peter Corlett (Great grandson of John & Matilda) ia0535@advsys.co.im