There's a John T. Sunell who died in Newport, 22 July 1927 at the age of 41y,3m,4d,previous residence was listed as Concord,NH. Occupation was a stone cutter.
He was married, but no wife's name is listed.
He was born in Finland,18 April 1886.

The John Sunell who was living in Concord, was married to Minnie Sunell, she died in 1918 at age 34. They were married in Concord in 1912.

Can this be your John Sunell?

I saw the directories listed at ancestry showing Mary as late as 1942 in Newport.