I have uncovered more information regarding Priscilla Thompson. She has a younger sister called Louisa who wrote a memoir 'Love Story of a Gypsy'. She mentions her much older sisters Ria and Prissy and that they married brothers. Maria married Robert Penfold in Shirley, Southampton on 19 October 1893. Robert had a brother Frederick who died in 1899 aged 21. I noticed that there was a burial for another Frederick Penfold in the same month in the burial register for Kingston Cemetery in Portsmouth. He is recorded as aged 20 months, son of Frederick Penfold. I found his birth registered in South Stoneham now part of Southampton and he was the son of Frederick Penfold and Priscilla nee Thompson. The address is where Frederick's sister Rachel was living with her husband Gerald Loyd Jackson so I know it is relevant. On Frederick's death registration the informant was H Thompson, father-in-law who was Priscilla's father.