Freemasonry as we now understand it wasn't around back then.
Unless someone specifically states that he is a member of the freemasons, it is hard to know for sure.
Henry Martyn Robert died on 1923-05-11.
Henry Martyn Robert was born on 1837-05-02.
Henry Martyn Blossom's birth name is Henry Martyn Blossom Jr..
Henry Martyn - cricketer - was born in 1877.
Henry Martyn - cricketer - died in 1928.
Henry Martyn Scudder died in 1895.
Henry Martyn Scudder was born in 1822.
Henry Martyn died on 1812-10-16.
Henry Martyn was born on 1781-02-18.
Henry Martyn Taylor was born in 1842.
Henry Martyn Taylor died in 1927.
Henry Martyn Congdon died in 1922.