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In 1841, Robert (30), Christiana (25), William (2) and Mary (1month) Taggart are living next door to William (60) and Mary (60) Taggart in Liverpool. All except William (2) and Mary (1 month)are shown as Manx born.
In 1861 Robert's birthplace is Douglas and Christiana's is Peel.
The IGI has LDS submissions (not parish record extracts) for Christian Corkill's christening March 1 1815 in Kirk German and William Corkill and Mary Kneen's marriage on Feb 5 1803 in German. There are parish extracts for other children of William and Mary.

Also there is a christening record of a Robert Taggart in Douglas, son of William Taggart and Isabella Christian, on April 23 1809.