The service was held on the spot where Dhone was killed
A ceremony to mark the contribution made by Illiam Dhone to the political independence of the Isle of Man has taken place in Castletown.
Illiam Dhone - the Manx name for William Christian - surrendered the island to Parliamentary forces during the English Civil War in 1651.
He was later accused of treason and sentenced to death by firing squad on Hango Hill on 2 January 1663.
A service to commemorate his death was held on Hango Hill at 1400 GMT.
The ceremony included speeches made in Manx and English from the spot where Dhone was shot.
The service was followed by a get together at the Viking pub in Castletown.