Sorry to be a little slow, needed to trace a relative to locate the address.
Your No7 in 1891 is as follows
Eleanor May Cain, wife, M, 29, no occupation shown, IOM Peel
Eleanor A Cain, Dau, S, 7, scholar, IOM Peel
John Cain, son, S, 6, scholar, IOM Peel
Hannah, Dau, S, 4, IOM Peel
William, son, S, 3, IOM Peel
Five of them in the house, no head of house shown. Husband may have been at Kinsale ? Eleanor May is clearly shown as a Wife and not a Widow.
I think, wonderfully, that the house is or was the subject of a purchase by a Peel based historical society, there is a photograph of it somewhere on the web, 7 and 9 were preserved, ( I have my gg grandfather and family at No9 in 1871). If you cannot find these worthy people, then let me know and I will send the picture.
Hope that this helps