⚔️ Robert de Mortain — Normandy Holdings (1066)
Robert de Mortain (c.1031–c.1095), Count of Mortain, half-brother of Duke William. His continental power was concentrated in the strategic southern borderlands.1
️ 1. County of Mortain — core honour
Comté de Mortain
- Granted c.1049–1063: Conferred after deposition of William Werlenc.1
- Strategic importance: Border territory adjacent to Brittany, Maine, Bellême.2
- Castle of Mortain: Administrative and military heart of the county.3
- Economic development: Established ten fairs across his lands.4
2. Castles and fortified seats
Mortain (Manche): Principal castle and comital seat.3
Saint-Hilaire-du-Harcouët: Castle constructed to secure southern approaches. Fair established.4
Le Teilleul: Fortified site with fair.4
Tinchebray: Strategic castle; fair established.4
La Haye-du-Puits (Cotentin): Regional administrative centre.5
Château de Gorron (Maine): Conquered 1082 from Fulk IV of Anjou.6
️ 3. Inherited lands — Conteville and Grestain
Conteville (Eure): Inherited c.1066 from father Herluin.7
Grestain Abbey: Co-founded c.1035 with Herluin and Herleva. Robert buried here.8
REFERENCES
1. Golding, B. 'Robert, count of Mortain', ODNB (2004).
2. Le Patourel, J. The Norman Empire (1976), pp. 183–185.
3. French Wikipedia: 'Robert de Mortain'.
4. Bristol MPhil abstract: 'Comital Fairs in Eleventh-Century Normandy' (2018).
5. Powicke, F.M. The Loss of Normandy (1913), p. 334.
6. Orderic Vitalis, vol. IV, p. 50.
7. Encyclopædia Britannica, 11th ed., 'Mortain'.
8. Grestain Abbey Cartulary, AD Calvados H 7110.
⏺️ FOOTNOTES: English estates (Cornwall, 797 manors) excluded. Gorron acquired 1082, post-1066 but listed as extension.
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