Duke is a character in Harvest Moon: Friends of Mineral Town. Duke is the owner of the Aja Winery in Mineral Town. He is proud of his business and willing to give advice. Duke is married to Manna, and the Winery is named after Duke and Manna's daughter, Aja. Unfortunately, Duke and Aja got into an argument years ago which caused Aja to leave Mineral Town. Neither Duke or Aja will apologize, and she unfortunately hasn't come home.