From Colonial Families of the United States of America, Vol. III:

Henry Pierpont immigrated to Maryland in 1665, settled in Anne Arundel Co., and was a member of the Society of Friends. He was the author of a book on Truth. His son, Charles, m. Sidney Chew, the dau. of William and Sidney (Wynne) Chew. A granddau., Mary Pierpont, m. 1762, Richard Richardson, Jr., [a grandson of William Richardson, Sr. and Elizabeth Ewen.]