Ge-horsian

According to the Old English Dictionary:

ge-horsian

p. ode, ade, ude; pp. od, ad, ud To horse, to set or mount on a horse, to supply with a horse; equitem facere, equo instruere vel imponere : as yet found only as pp :-- Here gehorsode wurdon the army was horsed [mounted], Chr. 867; Th. 130, 28, col. 3 : Gehorsade, 130, 28, col. 2 : 131, 28, col. 1, 2 : Gehorsude, 130, 27, col. 1. Ælfréd æfter ðam gehorsodan [gehorsudan, col. 1; -sedum, 147, 3, col. 1; sedun, col. 2] here mid fyrde rád óþ Exancester Alfred with his force rode after the mounted army to Exeter, Chr. 877; Th. 146, 1, col. 3. Ða Denan wurdon gehorsode the Danes were horsed [mounted], Chr. 1010; Th. 264, 2, col. 2. DER. horsian. ge-horsian