There is a marriage Braddan 18090826 between John Shimin + Elizth taggart

the first few of the children appear to be bapt Douglas St Georges to john shimin + eliza shimin (dau Jane), or John shimin + elizth (esther + 2 x Mary 1813 + 1815 tho the date differs slightly) - sarah is possibly Malew 18160602 to john shimin + elizth shimin
However there was a second marriage between John Shimin + Elizth Shimin Bra 18100423 the children of whom might well be confused