I know your interest inthe Langton family is concerned more with links between the variious branches, but thought you might find the following interesting. In 1999, I published a book "The Diaries of George Langton (1647-1727)". It was based on diaries in the Lincoln Archive (UK). George was from Langton-by-Spilsby. Since then, two more diaries have been located for 1701 and 1670-80. Unfortunately, Burke's Landed Gentry (which you know) can be confusing, but shows that my George was married to Mary Tyndall in 1684 (correct) and that his father, George, was married to Alice Holloway (wrong).He was actually married to Frances Clutterbuck from Dunton, Bucks.; this was shown in my George's marriage settlement document.It is also shown in official (Heraldic?) family tree, except that the descent is wrong, attaching my George to the George+ Alice Holloway pair!! The really important link is between my George's father and his cousin, William, who was the son of Sir John Langton. William had children, but they were all dead by1654.This entry in one of the newly-discovered diaries for 1672, explains what happened next:- ".....That my father had lately purchased ye seat of ye family wch was sold by ye elder house & by yt means had run himself into 5, or 6000l debt...." From here on to the present day, the line of succession for the Langtons of Langton-by-Spilsby (sometimes called Langton-by-Partney) is pretty clear.
I would have sent you a proper drawing of the family tree, but at present I have little success with sending attachments!!