Webster's Revised Unabridged Dictionary · 1913

Seigniory

Seigniory , noun

[Old English seignorie, Old French seigneurie, French seigneurie; compare Italian signoria.]

1.
The power or authority of a lord; dominion.
O'Neal never had any seigniory over that country but what by encroachment he got upon the English. — Spenser
2.
The territory over which a lord holds jurisdiction; a manor.