Complex sentence: The third owner was Abraham Wilkinson who in 1791 added almost 40 extra hectares to this estate when his only daughter Maria married Robert Shaw who was first baronet, Member of Parliament and Lord Mayor of Dublin.
Split into simpler sentences: The third owner was Abraham Wilkinson in 1791 who put almost 40 extra hectares to this estate. When his only daughter maria married Robert shaw who was first baronet, member of the parliament and Lord Mayor of Dublin.