I had a hard time finding information on my ancestor Rachel Rall until someone suggested I research "Roll."I have more information than I need now. Just a tip for you.
Also, if you are looking for an Abraham Rall/Roll, here is his will. He was born 11 Aug 1759 in New Jersey and died 21 aug 1827 in Hamilton, Ohio.
Will of Abraham Roll; written August 15, 1827; admitted to probate Sept. 12, 1827. Sons, Samuel;Wick; John; youngest son Isaac; daughters, Elizabeth, wife of Calvin Raymond; Rachel, wife of Robert Preston; Martha; grandsons, John Brokaw, sonof Isaac Brokaw; Abraham Roll, son of Wick Roll; Abraham Brokaw, son of Isaac Brokaw; Henry Roll, son of Wick Roll; Robert Rich, son of James Rich; William Roll, son of Isaac Roll; Wife Prudence. Eliza Ann Lindley mentioned (relationship, if any, not given) Appoint wife Prudence Roll executrix; son Wick Roll, executor. Witnesses: Thmas Long and Rachel Badgley. Appraissors: Clark Bates, William Moore, Joshua Moore, and Joshua Williams, Sr. Sworn to before Daniel Gano, clerk.