Looking for Lynch of Sussex County Delaware

David LYNCH (1819-1886)married Ann MARINE (born abt. 1820) on 24 Feb 1840, in Sussex Co. DE. I am searching for anestors of both. David and Ann had the following children: Mary Ann, John Henry, Sarah E., David Edward, Susan Catherine, Charles Wesley, Amanda and William T.

David also had a brother, Williams D. LYNCH (1805-1882)who married Anne Owens. as well as a third brother who was named John W. Lynch, born, I believe before Williams and David. I know nothing more about him.

These Lynches lived in the Mispillion/Nanticoke/Greenwood area of Delaware for as long as I have traced them, but may have originated in Somerset County, MD or thereabouts.

Would appreciate any information about these families.