Grose Family Genealogy Forum
I am replying just to verify that there were three Groses, Simon and Theobold , who arrived in Lancaster PA on November 20, 1741. According to my records, Simon and Sarah moved to Yadkin County NC, where Sarah married Frederick Long in 1766. (Simon's son Jacob married a Mary Renninger, making her a Mary Grose, but not your Mary Grose.) Perhaps though this information will help. I am reaching dead ends on Theobold, but he might well be a key to the Lancaster PA - VA Grose connection.