I have an Isaac Allen in my database.He was born abt. 1788, in Lincoln Co NC to Joseph Allen b. 1755.He married Sarah Hawkins abt. 8/31/1813 and had the following children; Virinda b. abt. 1814, Evaline b. abt. 1826, John b. abt. 1828, Amanda b. abt. 1831. Do any of the childrens' names fit your data? Could Sarah Sliger be his 2nd wife?