Jonas was the son of Casper and Judith Spengler. He was born in Weiler, Baden Wuertemberg, Germany. He came to the Pennsylvania with his parents on the ship "William and Sarah" which landed in Philadelphia on September 21,1727. His family settled just east of York, PA. He and his brother, Rudolph, purchased a 719 tract of land from the Penns in 1738 near Thomasville, PA in the vicinity of Roth's Church, where he farmed the rest of his life. He married Mary Maria Kindig daughter of Martin Kindig in 1744. They had eight children: Joseph, Bernard, Henry, Rudolph, Eve, Judith,Catherine and Anna Mary. Jonas died in Paradise Township, York County, PA.