I am compiling my family history which includes the names Niesner, Irwin, Ziants, and Reeping.
The Irwin family comes from the town in southwestern Pennsylvania of the some name. A relative Henry Irwin fought in the Civil War and per a newsclipping was one of the youngest Union soldiers in the war. My grandfather, Howard Franklin Irwin had a grocery store in Irwin.
The Niesner side comes from somewhere in Germany.