Gold Knight is a synonym for the idiom "Knight in Shining Armor."
A Gold Knight is a man that helps a woman when she's in distress. This chivalrous man protects women in difficult situations if necessary. He is always ready to rescue her from distress. This type of man also has a heart of gold, meaning that he treats others with goodness and kindness.
My husband is kind to people and determined to fix problems. I married a Gold Knight!