I think you may be looking for Peter Barlett b. July 4, 1780 in Tulpehocken Twp., Berks Co, PA. He married Sophie and had one son John, b. March 15, 1802. He then married Christina and had children Jaocb, 1806, Mary Ann, 1809, Lewis 1813, Peter 1813 (twin), Susannah, 1818, Catherine 1820, Samuel 1822, Michael 1824, Elizabeth 1826. Most were born in Toby Twp. Armstrong Co. now Clarion Co., PA.
If this is the right Peter, his parents were Conrad and Magdalena Berlet.