Feudum Francum
Defined in 3 dictionaries — Cyclopedic (1922), Ballentine's (1916), Black's (1891)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
A free feud. One which was noble and free from talliage and other subsidies to which the plebeia feuda (vulgar feuds) were subject. Spelman.
Ballentine's Law Dictionary
James A. Ballentine · 1916
A free feud. Feudum hauberticum. A fee held by service of being present in full armor at the call of the lord. Feudum improprium. An improper feud; a derivative feud; one having extraordinary incidents expressed in its creation. See 1 Bl. Comm. 58.
A Dictionary of Law
Henry Campbell Black · 1891
A freo feud. One which was noble and free from talliags and other subsidies to which the plebeia feuda (vulgar feuds) were subject. Spelman.