I this Stillman A. Guptill the same person as Alfred guptill?

There is another Stillman A. Guptill, buried in Fairhaven Baptist Cemetary, on Deer isle Nb, Canada. The dates on 

the Gravestone are 1828-1860. My anscestor Alfred Guptill, born on Deer isle and married Charlotte Wentworth, was also born 1828 and died 1860. I am wondering if these may be the same person.

I am having such a hard time trying tp find Alfred Guptill's parents.

Alfred Guptill moved to Eastport, Maine after getting married in 1851, Has 4 children: Franklin W. 1860, Almira C. 1854, Mary Jane 1852 and William A. 1858. What info I have found was from Ancestry.com and Family search.org, as well as some internet sites. Can you help me?

Contact me at: ktkitsos@comcast.net. Thank you