Simplify the following text for a Grade 7 native English-speaking person.
Original: Hannibal Hamlin ( August 27 , 1809 - July 4 , 1891 ) was the 15th Vice President of the United States ( 1861-1865 ) , serving under President Abraham Lincoln .
Simplified: Hannibal Hamlin ( August 27 , 1809 â `` July 4 , 1891 ) was a politician from Maine .