The proper name Tilghman was popular in the 1800's into the early 1900's in Bucks, Lehigh and Northampton Counties of PA. I have 14 relatives in my data base between 1830 and 1914 using this proper name. Does anyone know the history behind this proper name being used in eastern Pennsylvania? There is a Tilghman street in Allentown, PA. Was this a surname first and then a proper name? Any help appreciated, thank you.