Jacob Hiltzheimer is mainly known for the diary he kept, part of which at least was published in the late 19th century. As his diary makes clear, he was a fairly prominent citizen in late 18th century Philadelphia, associating with some well-known people.
(1785) #1 Heltzheimer's Alley, Finley, James
(1785) #2 Heltzheimer's Alley, Heltzheimer, Jacob
(1785) #4 Heltzheimer's Alley, Emery, Baltac