According to both, Ostrogotho was born while Theodoric was staying in Moesia (before 489).
Ostrogotho and her sister accompanied Theodoric on his campaign from Constantinople to Italy.
During the fight against Odoacer, she was left by her father in Ticinum (Pavia).
In 494, after Theodoric had consolidated his rule in Italy, he arranged the marriage of Ostrogotho with Sigismund, son of the Burgundian king Gundobad.
[4] His second wife, whom he had married after the death of Ostrogotho, had convinced him that Sigeric was plotting to overthrow him.