Alexander JELLISON is my first cousin eight times removed; we are related through his grandparents, my eighth grandparents Nicholas and Barbara (GREENE) JELLISON. Alexander is the son of Joseph and Sarah (GRAY) JELLISON. He was baptized at the First Church of Berwick 20 Jun 1723 in Berwick, Maine. He married Margaret NASON 31 August 1749 in Berwick, they had fifteen children: George, James, Margaret, Eunice, Stephen, Nathaniel, David, Nancy, Alexander Jr., Olive, John, Joseph, Lydia, Benjamin and Sally. Alexander died before 13 Jun 1781 in South Berwick, Maine, he died intestate, and his probate was finalized 13 June 1782 in Berwick.
I’ve noticed tracing the Jellison family that there are many variations of the name used commonly: Jellison, Jellerson, Gillison, Gellison, and many more. Good luck and share what you have learned I’d love to hear it.
 Hon. John Clark Scates, “Records of the First Church of Berwick (South Berwick), ME.,” New England Historical and Genealogical Register, 82 (1928), online archives, American Archives (www.americanancestors.org : online 10 August 2013), 20 June 1723 private baptism.
 Rev. Everett S. Stackpole, “Berwick (Maine) Marriages,” New England Historical and Genealogical Register, 55 (1901), online archives, American Ancestors (www.americanancestors.org : online 10 August 2013), Alexander Jillison & Margaret Nason 31 Aug 1749.
 York County, Maine, Maine, York County, Probate Estate Files, 1690-1917, Jacobs, H-Jellison, E, images 1151-1156, case 10143-10220 Alexander Jellison; FHL microfilm 2319297.