Vanderhoven7 : Apparently he died at 64 and a person close to him on his final train ride home described him as looking older than his 88 year old father.
His father died in 1897 (at 84), nineteen years before Russell's death in 1916 (at 64), so perhaps the "person close to him" wasn't quite that close.
Vanderhoven7 : I wonder why he died wearing a Roman toga.
The December 1, 1916 Watchtower gives an account of his death by Menta Sturgeon, his traveling secretary, who was with him on the train. He writes (Reprints, p.365):
Toward morning he had me make a robe for convenience sake by pinning a sheet inside of a blanket, wrapping him in it like a robe and fastening it under his chin. He stood up on the floor for this purpose, and then lay down on the couch instead of returning to his berth. I therefore sat on his bed while he lay before me. After several hours his robe proved to be rather inconvenient, because the sheet and blanket could not be kept together. It was then that he stood again and said, "Please make me a Roman toga."
Menta Sturgeon writes later that he didn't know what Russell meant by wearing the sheets as a toga. He suggests that at a time when he was too weak to talk clearly, he wore the toga to indicate he had remained faithful to death. That may be so. It might simply be that he used two sheets as the sheet and blanket could not be kept together. But whatever the case, there doesn't seem to be any indication that he was depressed.