Ad Fidem
A New Law Dictionary and Glossary · Alexander M. Burrill · 1850
A New Law Dictionary and Glossary
Lat. Under allegiance; owing allegiance; bound to allegiance, or fealty. Quia est ad fidem regis Franciae, et nihil capere poterit antequam fiat fides regi Angliae; because he owes allegiance to the king of France, and can take nothing before allegiance (or fealty,) be sworn to the king of England. Bract. fol.
428 b.
See Fides. Ad fidem utriusque regis; owing allegiance to each king; the subject of both kings. Sunt aliqui Francigenae in Francia qui sunt ad fidem utriusque; there are some Frenchmen in France who owe allegiance to both [kings.] Bract. fol.
427 b.
This phrase is adopted by Lord Coke, and is freely used in modern law, in the discussion of questions of allegiance, and citizenship.
7 Co. 1, 27, 54. 2 Kent's Com. 56.
AD FILUM AQUAE. L. Lat. To the thread of the water; to the central line, or middle of the stream. Usque ad filum aquae; as far as the thread of the stream. Bract. fol.
208 b, 285 a.
A phrase of frequent occurrence in modern law; of which ad medium filum aquae (q. v.) is another form. See Filum, Filum aquae.