There is no use for the gold bullion, other than to sell it for $125.
Note: prices listed on this page are based upon the player having neutral honor and playing the game on Normal difficulty. If the player has high honor, the selling price will be Increased by 50% everywhere except Thieves' Landing. Low Honor decreases selling price by 50% everywhere except Thieves' Landing. While playing the game on Hardcore difficulty, money is more scarce and the base, neutral honor price of each item will be slightly lower.
Ambrose Jackson Hood is a reference to three Civil war Generals; Ambrose Burnside (Union), Thomas "Stonewall" Jackson (Confederacy) and John Bell Hood (Confederacy). It is possible that he could also be a reference to the 7th President of the United States of America, Andrew Jackson.