Note: Do not rely on this information. It is very old.
Heirlooms
Heirlooms are such goods and personal chattels as, contrary to the nature of chattels in general, go by special custom to the heir or devisee of the owner along with the inheritance, and not to his executor. The owner of an heirloom cannot dispose of it by will, so as to sever it from the inheritance, though he may dispose of it during his lifetime.