Wooler was not recorded in the Domesday Book, because when the book was written in 1086, northern Northumbria was not under Norman control. However, by 1107, at the time of the creation of the 1st Baron of Wooler, the settlement was described as "situated in an ill-cultivated country under the influence of vast mountains, from whence it is subject to impetuous rains". Wooler subsequently enjoyed a period of prosperity and with its expansion it was granted a licence in 1199 to hold a market every Thursday. The St. Mary Magdalene Hospital was established around 1288. Wooler is close to Humbleton Hill, the site of a severe Scottish defeat at the hands of Harry Hotspur in 1402. This battle is referred to at the beginning of William Shakespeare's play Henry IV, Part 1 – of which Hotspur is the dashing hero. After the Dissolution of the Monasteries, the patronage and tithe income from the parish church passed from the Bishop of Durham to the Earl of Tankerville. Wooler also used to have a drill hall that was the local "picture house" which children were evacuated to in World War II. There also used to be a fountain situated at the top of Church Street in the town. Alexander Dalziel of Wooler was the father of the celebrated Dalziel Brothers. Seven of his eight sons were artists, and became celebrated engravers in London. Their sister Margaret was also an engraver. Between 1887 and 1965 the town was served by Wooler railway station on the Alnwick to Cornhill Branch.
At one time, there was also a Methodist congregation in Wooler. The old Methodist chapel on Cheviot Street is now the Glendale Hall.
Meaning of place-name
Wooler may be from Old Englishwella "well, spring" and ofer. A record of the name as Welnfver in 1186 seems to suggest this origin. The well or spring referred to is the River Till. The Wooler Water, part of which is also known as Happy Valley, is a tributary of the River Till and is formed by a confluence of the Harthope and Carey Burns which rise in the Cheviot Hills, to the south of Wooler. Another possible origin is "Wulfa's hillside", from the Old English personal name Wulfa "wolf" and őra "hillside, slope", although this word in place-names usually means "river mouth, shore". A record of the name as Wulloir in 1232 may suggest this origin. It is not certain which is the actual origin.
Governance
An electoral ward in the same name exists. This ward stretches from the Scottish Border south-east to Ingram with a total population taken at the 2011 Census of 4,266.