He was the head Gamekeepers son. Came across misfortune as a young lad when one of the Lord's horses a horse kicked him in the head and left him wanting.
The Lord of the Manor feeling much guilt(and delighting in irony) gave the lad a job in the stables.
Jack Butland sounds like the local Blacksmiths apprentice. Of working class background but with the looks and charm to turn even the best bred ladies head.