Lady Tadminster, our Member's wife, she was the late Lord Abbotsbury's daughter, does the same. 
Lady Tadminster was the member's wife and Lord Abbotabury's daughter. 
mnli hypothesis: Lady Tadminster was the member's wife and Lord Abbotabury's daughter.  premise: Lady Tadminster, our Member's wife, she was the late Lord Abbotsbury's daughter, does the same. 