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| de Mohun family | |
|---|---|
| Name | de Mohun family |
| Caption | Coat of arms associated with the senior line |
| Country | England |
| Founded | 11th century |
| Founder | Baldwin de Mohun (probable) |
| Titles | Earl of Somerset; baronies; feudal barons of Dunster |
| Dissolved | 15th century (senior line) |
de Mohun family The de Mohun family were a medieval Anglo-Norman noble lineage prominent in Dunster, Somerset and other counties after the Norman conquest of England. They held feudal baronies, participated in royal service under monarchs such as William II and Henry II, and were involved in conflicts including the Anarchy (England) and the Barons' Wars. Their legacy survives in heraldry, surviving manor houses, and chronicled appearances in sources like the Domesday Book and the records of Pipe Rolls.
The family originated from a Norman territorial name associated with places such as Mahun or Montacute in Normandy. Early figures like Baldwin (or Baalun) are recorded in post-Conquest sources including the Domesday Book and continental charters linking them to lords in Calvados and Seine-Maritime. The surname reflects the medieval practice of locative surnames derived from place-names in Normandy and was Latinized in documents of the Anglo-Norman chancery and in chronicles by writers like Orderic Vitalis.
From the 11th to the 13th centuries the family established itself as feudal barons, notably at Dunster Castle in Somerset and holding manors recorded in the Domesday Book across Devon, Somerset, Dorset and Wiltshire. Members of the family performed knightly service for rulers including William II and Henry I, and were involved in the wider politics of Angevin Empire administration under Henry II and Richard I. During the civil strife of the Anarchy (England) and the subsequent reign of Henry II and John, King of England, the family navigated feudal disputes, royal escheatorship, and legal processes reflected in Pipe Rolls and writs issued from the Curia Regis. The senior line later acquired or contested rights connected to the Earl of Somerset title and to baronial estates that placed them in the orbit of magnates such as the FitzGeralds, Beauchamps, and de Clares.
Prominent figures include early tenants and knights recorded as Baldwin, William, and Reginald who appear in charters and feudal surveys; later notable scions bore titles such as feudal baron of Dunster and were entangled in disputes over the earldom in Somerset. Family members served kings and royal officials like the Justiciars and sheriffs, and appear in chronicles alongside contemporaries such as Geoffrey de Mandeville (died 1144), Robert of Gloucester, and William Marshal, 1st Earl of Pembroke. Alliances by marriage linked them to houses including the Courtenays, Bohuns, Talbots, and Pytte/Popham-type gentry, bringing interactions with institutions like Westminster Abbey and Bath Abbey. During the later medieval period, cadet branches intermarried with families involved in regional politics of Somerset and Devon and produced knights active in campaigns in Scotland and in continental expeditions under monarchs such as Edward I and Edward III.
Arms attributed to the family are recorded in medieval armorials and in the heraldic visitations of Somerset and Devon. The devices, tinctures, and charges appear alongside those of families like the FitzWalters, FitzHughs, and Bartholomews in roll compilations such as the Glover's Roll and the Dering Roll. Heralds and antiquaries compared their escutcheon with neighboring baronial coats in collections preserved at repositories like the College of Arms and county record offices that also hold seals and funerary brass impressions found in ecclesiastical settings such as Dunster Priory and parish churches.
The family's seat at Dunster Castle produced major medieval fabric including curtain walls, a keep, and domestic ranges; later works were adapted by owners such as the Fletcher family and custodians linked to the English Heritage corpus. Other associated manors and advowsons appear in monastic cartularies of Glastonbury Abbey and Wells Cathedral and in estate surveys documenting timber-framed halls, moated manor houses, and chapels across Somerset and Devon. Archaeological reports and antiquarian accounts relate the family’s patronage to chantries, manor churches, and funerary monuments that survive as part of local heritage recorded in county histories by antiquaries like John Leland and Sir William Dugdale.
By the late medieval to early Renaissance period the senior line fell into decline through lack of male heirs, forfeiture in feudal disputes, and absorption by marriage into families such as the Carews and Hungerfords; estates passed through inheritance, royal grants, and legal suits involving courts like the Court of Chancery. The name survives in place-names, archaeological remains, heraldic records, and citation in primary sources such as Pipe Rolls, the Patent Rolls, and antiquarian collections, informing studies of feudal barony administration, medieval landed society, and regional history of Somerset and Devon.
Category:Anglo-Norman families Category:Medieval English nobility