The Tech Guy's Transmigration

Rodney, a devoted engineering geek, wakes up to find his soul has slipped into the body of a minor royal in an unfamiliar world. Overnight he inherits a wife he never chose and a fief made of barren wasteland. Rodney must now work out how to make a place that has nothing going for it survive, while his new marriage and the strange new life around him demand far more than he expected.