1911 Encyclopædia Britannica, Volume 5… (1911)
“ CALVES’ HEAD CLUB, a club established shortly after his death in derision of the memory of Charles I. Its chief meeting was held on the 30th of each January, the anniversary of the king’s execution, when the dishes served were a cod’s head to represent the individual, Charles Stuart; a pike representing tyranny; a boar’s head representing the king preying on his subjects ”
