Did you check the IGI on Familysearch.org?
There is an extracted entry for the marriage of William Kinnish and Esther CLARKE Marriage: 29 JUN 1850 Patrick, Isle Of Man.
Husband Age at Marriage: 22
Wife Age at Marriage: 22

You should be able to track them through censuses. (See the 1881 one free on the same website, above.)

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