In-swán

According to the Old English Dictionary:

es,

in-swán

m. The herd who had charge of the lord's swine :-- Ǽlc gebúr sylle .vi. hláfas ðam inswáne ðonne hé his heorde tó mæstene drífe omnis geburus det vi. panes porcario curie quando gregem suum minabit in pastinagium, L. R. S. 4; Th. i. 434, 21. in-swan