partitionern.

1793 tr. M. Turgot Refl. Formation & Distrib. Wealth §94 If he lends it [sc. capital] to a proprietor, he seems to belong to the class of proprietors, and he becomes co-partitioner [Fr. copartageant] in the property.

1820 S. Turner Hist. Anglo-Saxons (ed. 3) I. iv. iii. 476 Their first occupiers or partitioners transmit them [sc. cultivated lands] to their descendants.

1854 Ded. Antioch Coll. & Inaug. Addr. Horace Mann 108 Where now, in the world's estimation..are Constantine, Cæsar, Borgia.., or the partitioners of Poland?

1888 Archaeol. Rev. Mar. 23 As each partitioner might in course of time be represented by a group of persons, his heirs, each of these fields might be again partitioned into smaller enclosures.

1918 Amer. Hist. Rev. 24 29 Feeble Poland (now already slipping into the grasp of the three partitioners).

1981 Summary of World Broadcasts Pt. 2: Eastern Europe (B.B.C.) (Nexis) 19 June EE/6753/B/1 This propaganda says nothing about the Austrians and Germans—who once were the two remaining partitioners of Poland.

1997 Econ. Hist. Rev. 50 12 They [sc. inventories] tended to be associated with three events: the early death of a head of household..; a dispute between partitioners [etc.].