ClipArt ETC
"Ninth Son, the DOUBLE QUATREFOIL. The differences used by armorists at the present time are nine in number. They not only distinguish the sons of one family, but also denote the subordinate degrees in each house." -Hall, 1862

Double Quatrefoil

"Ninth Son, the DOUBLE QUATREFOIL. The differences used by armorists at the present time are nine in…

The heraldic charge borne by the ninth eldest son in a family.

The Double Quatrefoil

The heraldic charge borne by the ninth eldest son in a family.