'The History of Warren County Ohio" by W.H. Beer & Company (publ. 1882 reprint 1994)pgs. 944-945:
John Ertel,.... is a son of John and Elizabeth (Eyer) Ertel. John Sr. was born in this township near Loveland, and was a son of Daniel and Catherine (Myers) Ertel, who were among the early pioneers in this country. John Ertel Sr., made a permanent home here and was a successful farmer and a respected citizen. He died in 1857 at the age of 51 years. She died in 1833, just eighteen years to the day, before him. The were parents of six children, Henry, Catherine, John, JACOB, Wintell, and Mary. By his second wife, Sarah Daughman, he had four children, Sophia, Lydia, William and Valentine. His second wife is yet living....
"Index to 1803-1834Marriage & License Books Warren County Ohio Probate court" publ. by Warren Co. Gen. Soc. pg 26 shows John Ertel married Sarah Doughman 15 Aug 1833 (pg 452 #4162)
Perhaps Jacob above is the one you are seeking?
Linda Boorom researching descendants of Aaron Booram (b. 1760-66 d. 1846 Hamilton Co. OH) which include dau. Lydia Booram m. Daniel Ertel 1819 and Malinda Booram m. Jacob Ertel 1834