Since posting the original details on Kelly's, I have searched the IGI and come up with possible marriage details and children of Catherine Kelly & Henry Cowly/Cowley as follows:

KATHERINE KELLY was born Abt. 26 May 1689 in Marown, Isle of Man. She married HENRY COWLEY 12 February 1711/12 in KK Michael, Isle of Man.

Children of KATHERINE KELLY and HENRY COWLEY are:

i. WILLIAM8 COWLEY, b. Abt. 22 May 1718, Lezayre, Isle of Man; d. 1 August 1725.

ii. NICHOLAS COWLEY, b. Abt. 19 March 1719/20, KK Michael, Isle of Man.

iii. ALICE COWLEY, b. Abt. 7 July 1723, KK Michael, Isle of Man.

iv. WILLIAM COWLEY, b. Abt. 23 March 1725/26, KK Michael, Isle of Man.

v. MARGARET COWLEY, b. Abt. 19 January 1728/29, KK Michael, Isle of Man.

vi. ISABEL COWLEY, b. Abt. 16 June 1731, KK Michael, Isle of Man.

There maybe others of course.

Elizabeth