The IGI has extracted bapts for Mary Ann the daur of Isaac Wilson & Cath Kissack on 16 Nov.1825 in Lezayre, and a Mary Wilson bapt 26 June 1825 Kirk German, but the Mary Ann seems more likely because that was her name at her marriage. Can only guess, because you need her father's name from the marriage record to confirm, as you certainly do for any Kelly (being one of the most common names in the IOM at that time).

According to Kissack information on the 'Seed of Isaac', Catherine b.1783 from the Glen Moar Lezayre family married Isaac Wilson in 1813. [www.kissack.co.uk]

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