Alexander McDonnell died a year later. La Bourdonnais would remain the best player in the world for the rest of his life. Outside chess he wasn't as successful. He had to sell all of his properties and possessions to pay off debt incurred through bad investments.
He faced no more challenges of note. He scraped a living playing chess and he was penniless in his last years. He needed to be the prolific player he was, , calculating accurately, moving quickly, and playing for up to 12 hours a day to rack up the stakes.
He was awarded a pension just before he died and this was paid to his wife for the remainder of her life. He was buried in the same graveyard as Alexander McDonnell in London's Kensal Green Cemetery.