Common-law mortgage
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
One possessing the characteristics or fulfilling the requirements of n. Mortgage at common law; not known in Louisiana, where the civil law prevnils; but such a mortgage made in another state and affecting lands in Louisiana, will be given effect there as a "conventional" mortgage, affecting third persons after due inscription.
Gates v. Gaither, 46 La. Ann. 286, 15 South. 50.