The congregation of Citeaux was at one time the most flourishing of the offshoots of the great Benedictine body.  The monastery of Citeaux was established by St. Robert of Molesme in A.D. 1092.  The saint was a Benedictine, and felt himself called to something different to what he had found in the monasteries of France.  The peculiar system of the Cistercians, however, was the work of St. Stephen Harding, an Englishman, who at an early age had left his own country and never returned thither.  He struck out a new line, which was a still further departure from the ideal of St. Benedict that was the Cluniac system.  The Cistercians, whilst strictly maintaining the notion that each monastery was a family endowed with the principles of fecundity, formed themselves into an Order, in the sense of an organized corporation, under the perpetual pre-eminence of the abbot and house of Citeaux, and with yearly Chapters at which all superiors were bound to attend.  It was the chief object of the administration to secure absolute uniformity in all things and everywhere.  This was obtained by the Chapters, and by their visitations of the abbot of Citeaux, made anywhere and everywhere at will.  The Order spread during the first century of its existence with great rapidity.  It is said that , by the middle of the twelfth century, Citeaux had five hundred dependencies, and that fifty years later there were more than three times that number.  In England the first abbey was founded by King Henry I, at Furness in A.D.1127 and of the hundred houses existing at the general suppression three-fourths had been founded in the twelfth century.  The rest, with the exception of St. Mary Grace, London, established in A.D. 1349 by Edward III., were founded in the early part of the thirteenth century.   

English Monastic Life by F.A. Gasquet.  (pages 218-221)

Aberconway	Abbey		Denbigh.
Albalanda		(see Whiteland).	Carmarthen.
Basinwerk	Abbey		Flint.
Beaulieu	Abbey		Hants.
Bindon	Abbey		Dorset.
Bittleden	Abbey		Bucks.
Bordesley	Abbey		Worcester.
Boxley	Abbey		Kent.
Bruerne, or Brueria	Abbey		Oxford.
Buckfast	Abbey		Devon.
Buckland	Abbey		Devon.
Buildwas	Abbey		Salop.
Byland	Abbey		Yorks.
Calder	Abbey		Cumberland.
Cleeve	Abbey		Somerset.
Coggeshall	Abbey		Essex.
Combe	Abbey		Warwick.
Combermere	Abbey		Radnor.
Croxden	Abbey		Stafford.
Cwmhyre	Abbey		Radnor.
Dieulacres	Abbey		Stafford.
Dore			Hereford.
Dunkeswell	Abbey		Devon.
Dunscroft, in Hatfield		(cell to Rievaulx)	Yorks.
Flaxley	Abbey		Gloucester.
Ford	Abbey		Devon.
Fors de Caritate, Wensleydale		(translated to           Jervaulx)	Yorks.
Fountains	Abbey		Yorks.
Furness	Abbey		Lancaster.
Garendon	Abbey		Leicester.
Grace Dieu	Abbey		Monmouth.
Haselden in Rodmarton		(removed to         Kingswood)	Gloucester.
Hayles	Abbey		Gloucester.
Holm Cultram	Abbey		Cumberland.
Horewell		(cell to Stoneleigh)	Warwick.
Hulton	Abbey		Stafford.
Jervaulx, or Jorvaulx	Abbey		Yorks.
Kingswood	Abbey		Wilts.
Kirkstall	Abbey		Yorks.
Kirksted	Abbey		Lincoln.
Kymmer	Abbey		Merioneth.
Llantarnam, or Caerleon	Abbey		Monmouth.
London, St. Mary Graces	Abbey		Middlesex.
Louth Park	Abbey		Lincoln.
Margam	Abbey		Glamorgan.
Meaux, or Melsa	Abbey		Yorks.
Merevale	Abbey		Warwick.
Neath	Abbey		Glamorgan.
Netley, Letley, or Edwardstow	Abbey		Hants.
Newenham by Axminster			Devon.
Newminster			Northumberland.
Newnham			Devon.
Oxford, St. Bernard’s College			Oxford.
Pipewell	Abbey		Northants.
Prene, or Preone		(cell of Wenlock)	Salop.
Quarre  (Isle of Wight)	Abbey		Hants.
Radmore in Cannock Chase		(trans. to        Stonleigh)	Stafford.
Regill		(cell of Fenley)	Somerset.
Revesby, or Rewesby	Abbey		Lincoln.
Rewley	Abbey		Oxford.
Rievaulx, or Rievalle	Abbey		Yorks.
Robertsbridge	Abbey		Sussex.
Roche, or Du Rupe in Maltby	Abbey		Yorks.
Rufford	Abbey		Notts.
Rushen			Isle of Man.
Salley, or Sawley	Abbey		Yorks.
Sawtre	Abbey		Hunts.
Sibton	Abbey		Suffolk.
Stanlegh, or Stanley	Abbey		Wilts.
Stoneleigh, or Stanley in Arden	Abbey		Warwick.
Strata Florida (Stratflour)	Abbey		Cardigan.
Strata Marcella (Strat Margel)	Abbey		Montgomery.
Stratford Langthorn, West Ham	Abbey		Essex.
Swineshed	Abbey		Lincoln.
Thame	Abbey		Oxford.
Tiltey	Abbey		Essex.
Tintern	Abbey		Monmouth.
Vale Royal	Abbey		Cheshire.
Valle Crucis, or De Valle Dei	Abbey		Denbigh.
Vaudey	Abbey		Lincoln.
Wardon de Sartis	Abbey		Beds.
Waverley	Abbey		Surrey.
<>Whalley, or Locus Benedictus	Abbey		Lancaster.
Whitland, or Blanchland	Abbey		Carmarthen.
Woburn	Abbey		Beds.
Basedale		Female House (Nuns)	Yorks.
Brewood White Ladies		Female House (Nuns)	Salop.
Cokehill		Female House (Nuns)	Worcester.
Douglas		Female House (Nuns)	Isle of Man.
Elreton		Female House (Nuns)	Yorks.
Esholt		Female House (Nuns)	Yorks.
Goykwell, or Gowkeswell		Female House (Nuns)	Lincoln.
Greenfield		Female House (Nuns)	Lincoln.
Hampole		Female House (Nuns)	Yorks.
Hevening, or Heyninges		Female House (Nuns)	Lincoln.
Keldholme, Kirkby Moorside		Female House (Nuns)	Yorks.
Kirkles		Female House (Nuns)	Yorks.
Legbourne		Female House (Nuns)	Lincoln.
Llanclere		Female House (Nuns)	Glamorgan.
Llanleir		Female House (Nuns)	Cardigan.
Llanlurgan		Female House (Nuns)	Montgomery.
Markham		Female House (Nuns)	Norfolk.
Nunappleton		Female House (Nuns)	Yorks.
Nuncoton		Female House (Nuns)	Lincoln.
Sewardesley		Female House (Nuns)	Northants.
Sinningthwaite, or Senningthwaite		Female House (Nuns)	Yorks.
Stixwold		Female House (Nuns)	Lincoln.
Swine, or Swinhey		Female House (Nuns)	Yorks.
Tarrent, or Kaines		Female House (Nuns)	Dorset.
Whiston		Female House (Nuns)	Worcester.
Wickham		Female House (Nuns)	Yorks.
Wintney		Female House (Nuns)	Hants.
Wykeham		Female House (Nuns)	Yorks.