Original sentence: His cousin is his fellow Boomtown Rat Pete Briquette, as their mothers, Margaret "Peggy" (Bowles) Moylett and Cecilia "Sheila" (Bowles) Cusack, are sisters
Edited sentence: His cousin is his fellow Boomtown Rat Pete Briquette, as their mothers, Margaret "Peggy" (Bowles) Cusack and Cecilia "Sheila" (Bowles) Moylett, are sisters