1682 immigrated, will probated 27 APR 1738
Came to America with his parents in 1682. As eldest son of William Gregg, he administered the estate, dividing the land with his brothers. In 1694, he built a 2-story stone house on his property. According to Historic Houses and Buildings of Delaware, this house has a resident ghost, dressed in old Quaker garb. This house was one of the first in Deleware to demonstrate Georgian Archicture and was still standing as late as 1964. In 1702 John Gregg bought 200 acres, part of Letitia's Manor on the Brandywine and erected a mill as early as 1715, which was later conveyed to his son William. He also owned 300 acres of land in Chester Co. PA at Kennett and lived there for a time. During his lifetime he acquired about 5760 acres of land in Deleware and Chester Co. Pa.