HOLOUR

also HOLER, HOLOR, HOLOURE, HOLYER, HOULLOURE, HOULOUR, HOULOURE, HULER, HULLAR, HULLOUR, HULLOWRE, HULLUR, HULOUR

CLICK HERE FOR KEY TO SOURCES

from Old French holier, holer, huler (later also houlleur), 
variant of horier, hourier, hurier, from Old High German huorari, huareri (Middle High German huorer, German hurer), whorer, fornicator; the first r became l in Old French by dissimilation, as in peregrinus, pelegrin, pilgrim

c 1230 - Hali Meidenhad, An Alliterative Homily;
see below From: 
Hali Meidenhad
An Alliterative Homily of the Thirteenth Century
Edited by Oswald Cockayne
Published for the Early English Text Society, 1866
P. 31

From: The Poetical Works of Geoffrey Chaucer
Edited by Arthur Gilman,1880
The Canterbury Tales
Tales of the Third Day, The Preamble of the Wife of Bath's Tale
P. 429