In the Middle Ages, the teloneum (also telonium or toloneum, from Greek τελώνιον, telonion, toll-house), in French tonlieu, sometimes anglicized thelony, was a market toll, a tax paid on a sale in the marketplace.
An unjust thelony was a fee exacted contrary to custom or where no service was rendered to the person made to pay it.
Examples of just thelonies, taken from Charlemagne’s 805 Capitulary of Aix-la-Chapelle, include: a fee or toll for using a market, or for passage over a bridge when that has traditionally been exacted, or for docking a ship for more than several days at a river bank.
As part of this arrangement, he stated, "This also I have added that if any [other] Jew should at any time stay with them he shall pay no thelony."
As part of this same arrangement, the Bishop provided that the Jews "were not required to pay tolls or duties [i.e., thelony] at the city's borders."