Per and Cui
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
When a writ of entry is brought against a second alienee or descendant from the disseisor, it is said to be in the per and cvA, because the form of the writ is that the tenant had not entry but by and under a prior alienee, to whom the intruder himself demised it.
2 Bl. Comm. 181.