Otto (1010 or 1020 – c. 1057) was Count of Savoy from 1051 (or 1056) until his death. He was son of Humbert I, the first Count of Savoy, and his wife Ancilla, and ascended the throne after the death of his elder brother, Amadeus I of Savoy

Amadeus I of Savoy

Amadeus I , nicknamed of the Tail or la Coda , was an early count of the House of Savoy. He was probably the eldest son of Humbert I...

.

Otto substantially enlarged his lands through his marriage with Adelaide of Susa

Adelaide of Susa

Adelaide of Susa was the Marchioness of Turin from 1034 to her death. She moved the seat of the march from Turin to Susa and settled the itinerant court there...

, margravine of Turin

March of Turin

The county or march of Turin was founded in 941 by Hugh of Italy, who appointed Arduin Glaber as its governor. Arduin had captured Turin and the Susa Valley from the Saracens...

 and Susa

Susa

Susa was an ancient city of the Elamite, Persian and Parthian empires of Iran. It is located in the lower Zagros Mountains about east of the Tigris River, between the Karkheh and Dez Rivers....

, a title she had inherited from her father Ulric Manfred II

Ulric Manfred II of Turin

Ulric Manfred II was the Margrave of Turin and Susa in the early 11th century.- Biography:...

. After this acquisition the House of Savoy

House of Savoy

The House of Savoy was formed in the early 11th century in the historical Savoy region. Through gradual expansion, it grew from ruling a small county in that region to eventually rule the Kingdom of Italy from 1861 until the end of World War II, king of Croatia and King of Armenia...

 concentrated their expansion efforts towards Italy instead of outside the Alps as they had done before. Savoy's lands occupied much of modern Savoy

Savoy

Savoy is a region of France. It comprises roughly the territory of the Western Alps situated between Lake Geneva in the north and Monaco and the Mediterranean coast in the south....

 and Piedmont

Piedmont

Piedmont is one of the 20 regions of Italy. It has an area of 25,402 square kilometres and a population of about 4.4 million. The capital of Piedmont is Turin. The main local language is Piedmontese. Occitan is also spoken by a minority in the Occitan Valleys situated in the Provinces of...

, although several other small states could be found between them.

Family

In 1046 he married Adelaide

Adelaide of Susa

Adelaide of Susa was the Marchioness of Turin from 1034 to her death. She moved the seat of the march from Turin to Susa and settled the itinerant court there...

, heiress of Turin

Turin

Turin is a city and major business and cultural centre in northern Italy, capital of the Piedmont region, located mainly on the left bank of the Po River and surrounded by the Alpine arch. The population of the city proper is 909,193 while the population of the urban area is estimated by Eurostat...

 and Susa

Susa, Italy

Susa is a city and comune in Piedmont, Italy. It is situated on at the confluence of the Cenischia with the Dora Riparia, a tributary of the Po River, at the foot of the Cottian Alps, 51 km west of Turin.-History:...

. They had five children:

• Peter
• Amadeus
• Otto
• Bertha
  Bertha of Savoy
  Bertha of Savoy , also called Bertha of Turin, was the first wife of Emperor Henry IV, and was German Queen and Holy Roman Empress. She is buried in the cathedral of Speyer.-Life:...
  
  , Countess of Moriana (died 1087), married Henry IV, Holy Roman Emperor
  Henry IV, Holy Roman Emperor
  Henry IV was King of the Romans from 1056 and Holy Roman Emperor from 1084 until his forced abdication in 1105. He was the third emperor of the Salian dynasty and one of the most powerful and important figures of the 11th century...
  
  .
• Adelaide (died 1080), married Rudolf of Swabia