Conversation so far:
Where was Joshua Chamberlain born?
Brewer, Maine.
Where did he go to school?
He entered Bowdoin College in Brunswick, Maine.
what did he study in college?
CANNOTANSWER.
Was he married?
He married Fanny Adams, cousin and adopted daughter of a local clergyman, in 1855.
Are there any other interesting aspects about this article?
CANNOTANSWER.
Is there anything interesting about his early life or education?
He suffered a speech impediment until shortly after graduating from Bowdoin College.

Question: when did he graduate college?
Self-contained rewrite: when did Joshua Chamberlain graduate college?