With a first name of Littleton, I would strongly encourage you to explore earlier generations of Adams family in Somerset Co MD and Accomack Co VA on the Eastern Shore of Md and VA.Large groups of these families migrated to NC in 1700s.Littletons were prominent on Eastern Shore and descendants there to this day.Hopewell family is ringing some bells in that area as well.
Thomas Adams d. Northampton Co VA son Phillip Adams b. Northampton Co VA marr Anne Crewe, migrated to Somerset Co MD, son Phillip marr twice, once to Mary Barry, son Abraham Adams.My family includes a Baker/Adams marriage in Accomack Co VA...their dau marr Berry.These intermarriages between the early colonial families went on 100-200 years.
My gr gr grandfather Charles Berry marr Margaret Lewis (Accomack Co VA) dau of William Lewis & Anna Wessells/Vessels.The Lewis family ties into Russell, Rodolphus, Bennett, Shreaves/Shrieves/Shreves families and many more.
The Berry family begain with French Hugenots who migrated to England. My ancestor, James Barre came to VA with wife Eliz. ca 1620, sailing into Jamestown.Then to Eastern Shore of VA.Son William Berry was a close friend with Richard Preston of Norfolk Co VA (born England), a prom. Quaker.They migrated to Dorchester Co MD, Calvert and Q. Anne Md. Some Berry sons settled in Talbot Co MD, Prince Georges Co MD and Kent Island. Wm. Berry converted to become a Quaker.VA drove the Quakers out of the state, thus the migration into MD.Preston settled Patuxent River area of MD.His son later became Mayor of Philadelphia Pa.Preston and William Berry actually overthrew early MD government for a short time. All this to show how Dorchester Co MD comes into play.Today in a car, you can drive from upper Accomack Co VA to MD state line in less than 30 min.MD counties are Worcester, Somerset, Wicomico, Dorchester.Then another 30 min or so north would be DE state line incl counties of Sussex, New Castle, etc.Keep driving north and you reach PA line.