Original sentence: Twenty-six-year old Macgill was married with a three-year-old daughter, Isolde (who later married Peter Ustinov), when she became involved romantically with Edgar Lansbury, a considerably older bachelor politician, who was son of the well-known popular Labour politician George Lansbury
Edited sentence: Twenty-six-year old Macgill was married with a three-year-old daughter, Isolde (who later married Peter Ustinov), when she became involved romantically with Edgar Lansbury, a socialist politician, who was son of the well-known popular Labour politician George Lansbury