Cyrus Gold (New Earth-Two)

Origin
The creature know as Solomon Grundy's past before fighting the original Green Lantern is large unknown and widely debated, but what is known is about the monster is that he was once a wealthy man known as Cyrus Gold.

Multiple people claim that Gold was a very wealthy mine owner, who made his fortune from find rare metals around Slaughter Swamp. It is unknown how Gold died, but what is known is that his body ended up in the Swamp, where his body was changed into what it is now.

1st Documented Resurrection
Solomon Grundy was first sighted in 1892, when he began attacking anyone who entered the Swamp. Grundy became such a problem that Alan Wayne a Gotham aristocrat who was concerned for the people hired the gun slinging legend Jonah Hex to deal with Grundy.

Grundy would fight the gunslinger and nearly killed him, in till Hex drew the monster into an abandoned mine and caused the tunnel to collapse and kill Grundy.