Complex sentence: Mary was the daughter of Sir Henry Harnage, of Belswardyne, Shropshire, and in 1821 the second baronet George Blackman assumed the surname of Harnage in lieu of his patronymic so that he could inherit the ancestral Harnage home, Belleswardine House in Shropshire.
Split into simpler sentences: Mary was the daughter of Sir Henry Harnage, of Belswardyne, Shropshire. In 1821, on his elevation to the peerage, George Blackman assumed the surname of Harnage in lieu of his patronymic so that he could inherit the ancestral Harnage home, Belleswardine House in Shropshire.