This porringer belonged to the Mary (Heath) Emlen (1692-1777), wife of the 2nd George Emlen (George—>George, b. 1695, d. 1754). It was made in Philadelphia by Joseph Richardson Sr. ca. 1740-1750. Mary's initials "ME" are engraved on the handle. It was sold at auction in 2021, and you can still view photos and a description at Invaluable.com. It was previously in the collection of the Henry Francis du Pont Winterthur Museum in Delaware.