SOURCE-09153Research NeededProbable
"La Manche: Part 2," in Calendar of Documents Preserved in France 918-1206, ed. ...
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"La Manche: Part 2," in Calendar of Documents Preserved in France 918-1206, ed. J Horace Round (London: Her Majesty's Stationery Office, 1899), 281-308. British History Online, accessed April 28, 2017, [1].