Ann and son, Joseph, are on Ancestry baptisms.
Ann was baptised at Windrush on 25th April 1790, with parents Thomas and Sarah. The surname was spelled as "Dorsett". So, she was a younger sister of Mary.
Joseph married Elizabeth Mason and Leah married Charles Mason. Elizabeth and Charles had three villainous brothers (highwaymen and thieves): Tom, Dick and Harry, who all came to sticky ends. Charles, my 3rd gt-grandfather, was a stonemason.
Gordon