Original sentence: Brenda Colvin (1897-1981) was an important landscape architect, author of standard works in the field and a force behind its professionalisation.Relatives included Walter Mytton and Auckland, also lieutenant-governor of the North-West Provinces and Oudh.Sidney Colvin was a critic, curator, and great friend of Robert Louis Stevenson
Edited sentence: Through this line, Mark Colvin's extended family includes Walter Mytton and Auckland, also lieutenant-governor of the North-West Provinces and Oudh; Brenda (1897-1981), an important landscape architect, author of standard works in the field and a force behind its professionalisation; and Sidney, a critic, curator, and great friend of Robert Louis Stevenson