There are many places named Strawberry Hill. There is a town in Kansas, Massachusetts, in London and also in New South Wales. There is a Strawberry Hill Resort in Jamaica and a Strawberry Hill located in the Golden Gate Park.
It was the name of a maid who worked at Ledston Hall as the story goes. Something happened to the children and she was blamed for it and branded a witch. I'm not sure exactly but I think that's roughly it. She was burned on the hill and it has been named after her.