That the marriage was not later than 1036 is certain from several charters of that year, in which Agnes appears as Geoffrey’s wife (Marchegay, _Archives d’Anjou_, vol. i. pp. 377, 402). But the _Gesta Cons._ (Marchegay, _Comtes_, pp. 131, 132) tell a story of Geoffrey having founded his abbey at Vendôme in consequence of a shower of stars which he saw when standing at his palace window with “his wife, Agnes by name.” As the first abbot of Holy Trinity at Vendôme was appointed in 1033 (Mabillon, _Ann. Bened._, vol. iv. p. 379), if this story is true, Agnes must have been married to Geoffrey in 1032. But unluckily, the foundation-charter of the abbey is missing. The only documentary evidence connected with the question consists of two charters. One of these is printed in Besly, _Comtes de Poitou, preuves_, p. 304. It has no date, and simply conveys some lands for the site of the abbey to Count Geoffrey and Agnes his wife. Of course if this is the deed of sale for the land on which the original buildings were begun in 1032, it settles the question as to the previous marriage; but as the abbey was not consecrated till 1040, it is quite possible that its building was a slow process, and more ground was required as it proceeded. The endowment-charter (dated 1040, Mabillon, _Ann. Bened._, vol. iv. p. 732) says: “Ego Goffredus comes et uxor mea Agnes ... monasterium ... _a novo_ fundaremus.” Does the solution lie in those words, “a novo”? Did Geoffrey found his abbey alone in 1032; stop work for a while on account of the Poitevin war and his quarrel with his father; and then, having married Agnes and acquired means by her step-son’s ransom, set to work in earnest conjointly with her and found the abbey anew? It is hard to throw over the distinct statements of two such writers as William of Poitiers and William of Malmesbury for the sake of three not very accurate chronicles and a late twelfth century romancer, doubtfully supported by a very vague charter.