One has to live in Lincoln, maybe (3)
I believe the answer is:
abe
'lincoln maybe' is the definition.
(Abraham 'Abe' Lincoln)
'one has to live' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'has' is a charade indicator (letters next to each other).
'to live' becomes 'be' ('be' can be a synonym of 'live').
'a'+'be'='ABE'
'in' is the link.
(Other definitions for abe that I've seen before include "President Lincoln was known as Honest ..." , "Eg, president Lincoln" , "Lincoln's diminutive" , "Lincoln, familiarly" .)