Brewster/McKergan families

Trying to find information of  my Great Grandparents, Daniel Brewster born c1816 Ireland (no baptism found ) and ` wife` Susanna McKergan born c1823 Ireland(no baptism or marriage found) went to Rutland in England.  In 1842 they baptised a daughter Ellen at Portstewart Presbyterian Church.before moving to Rutland. Have been researching for nearly forty years now so I have checked all the obvious sources. I have written to local churches in Portstewart, had a tree put on notice board in Portstewart Library but nothing found.

In 1853 Susanna was in Ireland and gave birth to a son Daniel. In 1853 there was a marriage between a David Brewster and Margaret McKirgan at Portstewart Presbyterian Church.  This could be the two families joining again in marriage.  Daniel Brewster`s son Daniel often changed his name to William when changing his work.The senior Daniel Brewster was a groom.

Thank you.