Complex sentence: Mary Chudleigh, 2nd daughter of the 1st Baronet, married Colonel Hugh Clifford and was the mother of Thomas Clifford, 1st Baron Clifford of Chudleigh, elevated to the peerage in 1672.
Split into simpler sentences: Mary Chudleigh, daughter of the first Baronet, married Colonel Hugh Clifford. They were the parents of Thomas Clifford, who was elevated to the peerage as Baron Clifford of Chudleigh in 1672.