US president in English city (7)
I believe the answer is:
lincoln
I believe this is a double definition.
'us president' is the first definition.
(Abraham Lincoln)
'english city' is the second definition.
(city in Lincolnshire)
'in' is the link.
(Other definitions for lincoln that I've seen before include "Eastern county town" , "US president, d. 1865" , "American car" , "16th President of the United States" , "16th US president" .)