The one wearing the ring was one of the men from the estate who'd "sworn to keep silent forever."
(http://www.dsboards.com/moviesquoteimages/1028NoDS_0.jpg)
Though while in real life it most probably was the actor's own wedding ring and he probably should have taken it off, there's really nothing in the film that says it has to be a wedding ring. He could be wearing the ring for any number of reasons - especially considering that fact that men wearing wedding bands wasn't yet in practice. [hall2_wink]