Melt marmalade in a small saucepan over low heat, stirring constantly; remove from heat, and let cool slightly.
Stir together marmalade, white grape juice, and orange liqueur in a large serving dish or bowl until blended. Add orange sections, and gently stir. Cover and chill 8 hours.
Add strawberries to oranges in bowl, and gently stir. Serve with a slotted spoon.
NOTE: For testing purposes only, we used Grand Marnier for orange liqueur.