Tyburn was a manor (estate) in the county of Middlesex, England, one of two which were served by the parish of Marylebone. Tyburn took its name from the Tyburn Brook, a tributary of the River Westbourne. The name Tyburn, from Teo Bourne, means 'boundary stream'.
The parish, and probably therefore also the manor, was bounded by Roman roads to the west (modern Edgware Road) and south (modern Oxford Street). The junction of these was the site of the famous Tyburn Gallows (known colloquially as the "Tyburn Tree"), now occupied by Marble Arch. So, for many centuries the name Tyburn was synonymous with capital punishment: it was the principal place for execution for London and Middlesex criminals and convicted traitors, including many religious martyrs. In the 18th century it was also known as "God's Tribunal".
The manor of Tyburn, and the neighbouring Lisson, were recorded in the Domesday Book of 1086, and were together served by the parish of Marylebone, itself named after the stream. The original name of the parish was simply Marybourne, the stream of St Mary; the French "le" appeared in the 17th century, under the influence of names like Mary-le-Bow. Domesday showed that the manor was held, both before and after the Norman Conquest, by the Barking Abbey nunnery. The Domesday survey records it as having eight households, suggesting a population of around 40. In the 1230s and 1240s, the manor was held by Gilbert de Sandford, the son of John de Sandford, who had been the chamberlain to Eleanor of Aquitaine. In 1236, the City of London contracted with Sir Gilbert to draw water from Tyburn Springs, which he held, to serve as the source of the first piped water supply for the city. The water was supplied in lead pipes that ran from where Bond Street station stands today, 800 m east of Hyde Park, down to the hamlet of Charing (Charing Cross), along Fleet Street and over the Fleet Bridge, climbing Ludgate Hill (by gravitational pressure) to a public conduit at Cheapside. Water was supplied free to all comers.