Where does the last name "Poritz" derive from?

Question

My girlfriend cannot figure out where her last name comes from. All her family knows about it is that her great, great grandpa was an orphan and that they think it comes from Lithuania.

Answer 1

Looking at early census records for the US, people with this last name state they were born in :

Russia

Lithuania

Many left from the Bremmen (Germany) port to come to the US

Answer 2

Early immigrants were from Germany, Bohemia and Prussia.

Answer 3

check out www.myheritage.com

Answer 4

the name was derive 4rom laghten dictionary