Rothrock Sr. was born 22 Oct 1746 in York, York County, Pennsylvania. He was a twin, brother of Philip Rothrock (1746-1825). Together they were the fifth and sixth of fourteen known children of Philip Jacob Rothrock (1713-1803) and Katherina Kuntz Rothrock (1720-1777), who were both born in Germany and died in Pennsylvania.

Peter married Catherina Mueller (later became Miller) (1749-1803) on 09 Oct 1770 at York, York County, Pennsylvania and they moved to the Moravian Community of Friedberg in 1771. Friedberg is located on the present day Davidson-Forsyth County, North Carolina line; but in 1771 it was on the Surry-Rowan County line, North Carolina and Surry become Stokes in 1789 and Forsyth in 1849 and Rowan became Davidson County in 1822.

Peter and Catherine were the parents of eleven known children; seven girls and four boys, namely:

1. Jacob Rothrock (1771-1848)
2. Anna Maria Rothrock Reich (1773-1844)
3. Catherine Rothrock Essex (1775-1849)
4. Philip Rothrock (1776-1858)
5. Elizabeth Rothrock Craver (1778-1858)
6. Anna Christina Rothrock Ripple (1781-1854)
(or born 1787?)
7. Barbara Rothrock Gladfelter/Clodfelter (1783-1820)
8. Joseph Rothrock (1785-1868)
9. baby girl Rothrock (1787-1787)
10. Johanna (Hanna) Rothrock Gates (1788-1867)
11. Peter Rothrock Jr. (1798-1882)

Was the youngest son Peter Jr. really born in 1798? His mother would have been 49 years old. Is his birth year wrong or was he the son of another Rothrock family?

Peter was the grandfather of 58 known grandchildren. There may have been other children that died young. Some records show twin children, Peter and Catharina Rothrock who died in 1787, were they children of Peter and Catherina? In Catharina the baby girl (1787-1787) listed above? Should a twin, Peter Rothrock (1787-1787) be listed?

Peter is reported to have fought under George Washington in the Revolutionary War.

Links to Peter's parents, wife, ten of his eleven known children and six of his thirteen known siblings are included below.