Complex sentence: The Lamberts divorced in 1933, and a year later, the former Mrs Lambert married, as her second husband, Dr Malvern Bryan Clopton, a surgeon who was the widower of her previous husband's sister, Lily Lambert Walker.
Split into simpler sentences: The Lamberts divorced in 1933, and shortly thereafter, the former Mrs Lambert married, as her second husband, Dr Malvern Bryan Clopton, a surgeon. He had been the widower of her previous husband's sister, Lily Lambert Walker.