A 38 mm badge with a red background and "Team Henry II".
Henry II was the son of Empress Matilda, who fought for the throne of England against her cousin King Stephen. To end the civil war Matilda and Stephen agreed that Stephen would remain King of England, but Matilda's son Henry would inherit the throne when Stephen died.
Luckily when Henry himself passed away he had sons to spare. Unluckily they weren't particularly loyal to each other.