Possible Clues:

• French wine region
• French region, colour and wine
• French red wine
• Dijon was the capital of this former French province
• Dispose of body, hiding weapon that's smeared finally red
• French wine - dark, purplish red
• Reddish firearm duke kept in northern town
• Heavy red wine
• Colour of weapon daughter discovered in northern town
• One French drink you initially wanted after food is knocked back?