The widow Mary KERMEEN who married James SHARP in 1855 was the daughter of Quayle Kissack, so wasn't the widow of James Kermeen.

I couldn't find a remarriage for Mary [Kinrade] Kermeen in Maughold marriage records.

I did find this Maughold burial:
John infant Son of James KERMEEN Feb 23 1837.

[KERMEEN James (son of) James Kermeen/ Mary Kinrade (bapt) Parish Church (Maughold) 27 Jan 1822. Illegitimate
KERMEEN William James Kermeen/ Mary Kinrade Parish Church 22 Feb 1824
KERMEEN Cath James Kermeen/ Mary Kinrade Parish Church 5 Jul 1829
KERMEEN Robert James Kermeen/ Mary Kinrade Parish Church 11 Mar 1832
KERMEEN John James Kermeen/ Mary Kinrade Parish Church 26 Apr 1835
KERMEEN John James Kermeen/ Mary Kinrade Parish Church 5 Apr 1840
KERMEEN Margaret James Kermeen/ Mary Kinrade Parish Church 4 Sep 1842]

Let me know if there are any other Maughold records you would like me to check.

Sue