Otto II (also Otho, Ottone, or Oddone; c. 1015 – 20 November 1084) was the Margrave of Montferrat from 1042 until his death.

Otto was the son and successor of William III and Waza. He married Constance, daughter of Amadeus II of Savoy. He was succeeded by their son William IV. His second son Henry was the founder of the dynasty of the margraves of Occimiano.

http://en.wikipedia.org/wiki/Otto_II_of_Montferrat

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http://fmg.ac/Projects/MedLands/MONFERRATO,%20SALUZZO,%20SAVONA.htm...

OTTONE, son of Marchese GUGLIELMO & his wife Waza --- . The primary source which confirms his parentage has not yet been identified. Lord of the March of Monferrato [Marchio Monferratensis]. "Ottone marchione et comite Montisferratensi" consented to the donation by "Oldericus marchio filius b. m. Widonis marchionis, et Julita comitissa uxor eius" donated property to "monasterii S. Silani…juxta flumen Sicidæ in loco Romagnano" by charter dated 20 Oct 1040[68].

m ---. The name of Ottone's wife is not known.

Ottone & his wife had two children:

1. GUGLIELMO [III] (-[1084/85] or before 28 Dec 1101). The primary source which confirms his parentage has not yet been identified. Marchese di Ravenna. [A highly speculative theory is noted under ANTIOCH, which is a possible co-identity between Marchese Guglielmo [III] and Marchese Guglielmo/Odo, the father of Tancred Prince of Antioch, nephew on his mother's side of Bohemond of Apulia Prince of Antioch. If this is correct, the first wife of Marchese Guglielmo [III] was Emma, daughter of Robert "Guiscard" Duke of Apulia. Tancred's father enjoyed a sufficiently prominent position in southern Italy to be described only as "the Marquis" in many contemporary records. No suitable southern Italian family of which he may have been a member has been identified. It does appear that the title "marchese" in Italy was at that time limited to families in the north, a logical conclusion considering the original purpose of the "march" being a border area into which a powerful government (in the case of northern Italy, Germany) was pushing its jurisdiction. Tancred's own illustrious marriage to the daughter of Philippe I King of France in 1106 is also best explained if the bridegroom had good family connections on his father's, as well as his mother's, side of the family. The validity of the theory depends, however, on whether any connection can be proved between Marchese Guglielmo [III] and southern Italy. If further information shows that Marchese Guglielmo's activities were confined to the north, it is improbable that the theory would be correct.] m firstly ---. The name of Guglielmo´s first wife is not known, other than the speculation noted above. This first marriage is indicated by the absence of Guglielmo´s son Enrico from the charter dated 28 Dec 1101 which names his two other known sons and their mother. m secondly OTTA di Agledo, daughter of TEBALDO di Agledo [from Ravenna] & his wife --- (-after 28 Dec 1101). "Vuilielmus et Reinerius fratres et Marchiones filii quondam item Vuilelmi Marchionis de Ravenna seu Otta comitissa mater et filii et filia quondam Tebaldi de Agldo et relicta jam dicta quondam Vuilelmi Marchionis quondam vir meus" donated property to the church of Vercelli by charter dated 28 Dec 1101[69]. Guglielmo [III] & his first wife had one child:

a) ENRICO [II] "il Balbo" (-before 4 Jan 1127). The primary source which confirms his parentage has not yet been identified. Marchese di Rocchetta. m ---. The name of Enrico's wife is not known. Enrico & his wife had one child:

i) BERNARDO . "Rainerius Marchio filius quondam Vilielmi Marchionis et Ardicius filius quondam item Ardicionis et Bernardus filius quondam Henrici" donated property to the monastery of "Virginis Mariæ sito in loco Lucedii" by charter dated 4 Jan 1126 (O.S.)[70]. Marchese di Rocchetta. 1127/35. m ---. The name of Bernardo's wife is not known. Bernardo & his wife had one child:

(a) DOMICELLA . The primary source which confirms her parentage and marriage has not yet been identified. Heiress of Rocchetta. The Annals of Ottobono record that "Donexella uxor quondam Alberti marchionis de Incisa et filii eius" were captured by the consuls of Genoa in 1188/89[71]. m ALBERTO Marchese di Incisa, son of --- (-before 1189).

Guglielmo [III] & his second wife had two children:

b) GUGLIELMO [IV] "Inforzato" (-before 4 Jan 1127). "Vuilielmus et Reinerius fratres et Marchiones filii quondam item Vuilelmi Marchionis de Ravenna seu Otta comitissa mater et filii et filia quondam Tebaldi de Agldo et relicta jam dicta quondam Vuilelmi Marchionis quondam vir meus" donated property to the church of Vercelli by charter dated 28 Dec 1101[72].
c) RANIERI di Monferrato (-[1135/37]). "Vuilielmus et Reinerius fratres et Marchiones filii quondam item Vuilelmi Marchionis de Ravenna seu Otta comitissa mater et filii et filia quondam Tebaldi de Agldo et relicta jam dicta quondam Vuilelmi Marchionis quondam vir meus" donated property to the church of Vercelli by charter dated 28 Dec 1101[73]. Marchese di Monferrato. - see below.

2. ARDIZZONE [I] (-before 4 Jan 1127). The primary source which confirms his parentage has not yet been identified. m RICHELDA, daughter of ---. The primary source which confirms her parentage has not yet been identified. Ardizzone [I] & his wife had one child:

a) ARDIZZONE [II] (-before 1172). "Rainerius Marchio filius quondam Vilielmi Marchionis et Ardicius filius quondam item Ardicionis et Bernardus filius quondam Henrici" donated property to the monastery of "Virginis Mariæ sito in loco Lucedii" by charter dated 4 Jan 1126 (O.S.)[74]. Marchese, at Felizzano. "Marchio Ragnerius filius quondam Willielmi et Gisla jugalis filia quondam Vialii, sive Willielmus filius iam dicti Ragnerii nec non et Julitta jugalis filia Lupaldi, atque Ardezonus filius quondam item Ardezonii" donated property to the monastery of Locedio by charter dated 28 Mar 1133 "in castro…Monsbellus"[75]. m ---. The name of Ardizzone's wife is not known. Ardizzone [II] & his wife had three children:

i) RANIERI . 1193.
ii) BONIFAZIO . 1193. Ancestor of the Signori di Asti.
iii) ENRICO . 1193/97.