Affidatus
A New Law Dictionary and Glossary · Alexander M. Burrill · 1850
A New Law Dictionary and Glossary
Lat. [from affidarey q. v.] One who has given or sworn fealty or fidelity; a tenant by fealty. Spelman, (voc. Affidare,) distinguishes the affidati from vassals properly so called. Affidata; a woman affianced, or betrothed.
Cowell.