My research shows that Peter is the son of Nicolas III and Salome Dreisbach. The only thing more I have on Elizabeth Lynn is that she died abt 1866. Peter had siblings: Maria Oplinger (abt 1778-1872); George Washington Oplinger (10 Mar 1791 - 11 May 1868); and Francis Oplinger (abt 1804 - 1854).
From Rinkenbach's book:
Like Peter Oblinger, George Oplinger must have been a son of Nicholas Oblinger. This is substantiated by a family legend that George Oplinger had a sister, Mrs. Bussard, who lived near Pittsburgh, Pa. As we have seen, Nicholas Oblinger had a daughter Mary who married Conrad Bossert and moved to Westmoreland County, Pa.
The tombstone of George Oplinger shows that he was born on Mar. 10, 1791, and therefore in Lehigh Twp., Northampton County. The first record of George Oplinger is of his being a soldier i the War of 1812. He was a soldier in the Mexican War; and is said to have joined, in 1862, the six-weeks militia in the Civil War, although past 70 years of age. His pension number was SC-973,367.
In 1814 George Oplinger married, at South Bethlehem, one Frederica Rice, daughter of Herman Rice of Lehigh Twp. She died about 1823; and in 1825 George Oplinger moved t0o Plains Twp., Luzerne County, Pa. With his five children he settled where Parsons, Pa. now is located. In June, 1825 he married Lavina Rhodes, by whom he had nine more children. After her death he married Lavina Derr, but had no more children.
A cooper by trade as well as a farmer, George Oplinger died on May 11, 1868 at the home of his son Benjamin Franklin. He was buried in the old City Cemetary at Wilkes-Barre, Pa. and his body later was removed to the present City Cemetery. Nothing has been learned of the dates of birth and death of his wives.