The IGI also has an extracted marriage record for CHARLES SHUTTLEWORTH CAIN and CLARISSA KELLY who married 06 NOV 1856 Marown. Husband Age at Marriage: 26, Wife Age at Marriage: 21.

This marriage can be seen in the parish register copy at the MM, or on LDS film worldwide through Family History Centres: 1849 - 1883 film no. 0106191. Details given are usually status, sometimes ages, places of residence, occupations, fathers' names and occupations, and witnesses.

Taking his age given at marriage, the closest on Brian's census index for 1851 is:
CAIN Charles 23 Cas 2526 134 17

Charles is at 14 Malew St., Castletown, 23, Draper, b.Castletown, with his mother Elizabeth Cain, widow, 60, Landed Proprietor, b.Rushen. Also there is Elizabeth's sister Jane G Quirk widow, 67 (or 61), Landed Prop., b.Rushen, and niece Elizabeth A Quirk unm., 23, b.Malew, plus some (other surnames) visitors and servants.

It looks as though Clarissa added a few years to her age at marriage to be "of age" (21).
1851 census index:
KELLY Clarissa 12 Cas 2526 173 108

The IGI has an extracted record for CLARESSA KELLY Christening: 28 OCT 1838 Saint Mathews, Douglas, Father: WM KELLY Mother: ISABELLA QUIRK.

Also an extracted record for CHARLES SHUTTLEWORTH CAIN Christening: 12 APR 1827 Kirk Rushen, Father: JOHN CAIN
Mother: ELIZABETH ANN SHUTTLEWORTH.

Sue