I am tracing FERGUSON ancestors who were all born in the "Newton, Limavady, Derry" area. I found the names I know for sure (William, Samuel, Malcom) in the 1831 Derry Census as living in "Keenaght, Bovevagh, Killibleught" at that time with Loughrey family nearby. The Fergusons also had a daughter Margaret, sons Andrew and John.
Ferguson's younger son Andrew b. 1805 m. Janet LOUGHREY in "Derry" in 1827. Andres's first son John born 1828 listed as Bovevagh Presbyterian, Derry, Ireland. They moved to Scotland abt 1843 or so.
My ancestor John Hill Ferguson, Sr was a son of William and Letitia Ferguson (also maiden name). He was born abt 1796 in Ireland. He moved to Scotland before 1821. I know all his descendants but nothing else about his ancestors. They were Presbyterians. Family names repeated many times in later generations were Letitia, William, John, James, Joseph, Mary Ann, and George.