hello pauline,could this be your sarah. BIRTH. SARAH JANE DONALSON 3-5-1872 BELFAST, ANTRIM, IRE. PARENTS JOHN DONALSON & CATHERINE WATERS. sorry could'nt find a marriage for john.
i found one birth for a john donaldson. 10-2-1834. bonneybefore, antrim, ire. parents alexander donaldson & margaret laird. found this from a different scource from sarahs..may not be as reliable.
kind regards mary.