Obvention
Obvention , noun
[Latin obvention, from obvenire to come before or in the way of, to befall; ob (see Ob-) + venire to come: compare French obvention.]
The act of happening incidentally; that which happens casually; an incidental advantage; an occasional offering. [Obsolete]
Tithes and other obventions.
Legacies bequeathed by the deaths of princes and great persons, and other casualities and obventions.