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Theobald was also called Theobald 'the Elder' who in 878 replaced Warnegald as v...
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Theobald was also called Theobald 'the Elder' who in 878 replaced Warnegald as viscount in Maine, quite probably on the basis of his marriage to a Rorgonid cousin Richildis. See: Pierre Riché, The Carolingians (1993), p. 237. Cited in Wikipedia.