My father's family has a story, which I've had from 2 sources who don't know of each other's existence, of Jewish forbears in rural Suffolk. My gggg grandfather was Thomas King, labourer, 1775-1830, d. Freckenham. One family source has him as the son of Abraham and Mary of Sudbury, saying that Abraham married the gentile Mary and was disowned by his family. I do have Ashkenazi DNA but also have Sephardic and possibly Ashkenazi DNA from my mother's family, so it's difficult to tell.