|Birth||January 1, 1060 (Savona, Province of Savona, Liguria, Italy)|
|Death||January 1, 1130|
Boniface del Vasto (c. 1060 – c. 1130) was the margrave of Savona and Western Liguria from 1084 to c.1130. He was the son and successor of Otto and of Bertha, daughter of Ulric Manfred II of Turin. Boniface was a member of the Aleramici dynasty.
As his first wife, Boniface intended to marry an unnamed woman who had been betrothed to his brother, Anselm, before his death. In 1079 Pope Gregory VII commissioned the bishops of Turin, Asti and Alba to convince Boniface del Vasto not to marry the woman, because her betrothal to his brother created a relationship of affinity between them.
Boniface is sometimes said to have married Alice of Savoy, the daughter of Peter of Savoy. This is unlikely, however, since Boniface and Alice were first-cousins-once-removed (Boniface's mother Bertha and Alice's grandmother Adelaide were sisters), and thus far too closely related to be permitted to marry according to canon law.
Boniface married a woman named Agnes, who is thought to have been the daughter of Hugh de Capet of France, Count of Vermandois.
Probably with Agnes of Vermandois, Boniface had several children, including:
- Manfred I of Saluzzo
- William, lord of Busca, and perhaps also Lancia
- Anselm, progenitor of the margraves of Ceva
- Henry, from whom the Del Carretto dynasty were descended.
- Otto Boverio, margrave of Loreto
- Boniface, 'the younger', bishop of Cortemilla
- Sybil, who married William VI of Montpellier
Boniface was also the guardian of his brother Manfred's children: Henry del Vasto, who married Flandrina, a daughter of Roger I of Sicily, and Adelaide del Vasto, who was Roger's third wife. Following Roger's death, Adelaide married Baldwin I of Jerusalem. Two of Manfred's unnamed daughters married Roger I of Sicily's sons from previous relationships, Jordan, Count of Syracuse, and Geoffrey, Count of Ragusa (who may have died before the marriage actually took place).