The primary source which confirms his parentage has not yet been identified. Marchese di Ceva. "Dominus Willelmus, D. Manuellus, D. Leo, D. Bonefacius et D. Georgius fratres omnes Marchiones de Ceva" exchanged property with Giacopo Bishop of Asti by charter dated Sep 1222. "Otto marchio de Careto et Oddonus eius nepos marchiones de Vasto et Guielmus marchio de Ceva et Manuellus eius frater suo et fratrum suorum…Raymundus marchio de Busca…et fratrum suorum et Gratapalea…et Henrici di Careto soceri sui…" made an alliance with Asti against Alexandria and Alba by charter dated 25 Nov 1228. 1
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