Career
Her father Philip of Swabia had been elected King of Germany on 6 March 1198. The two rival kings continued to fight until the assassination of Philip on 21 June 1208. The assassin was Count Otto VII of Wittelsbach who had asked for the hand of either Beatrice or one of her three younger sisters.
His request had been denied and he reacted violently.
He had been forced to retire to his hereditary lands near Brunswick. However the assassination left him the only King of Germany.
He took advantage to make amends with the remaining members and supporters of the House of Hohenstaufen. Their new alliance was sealed with the betrothal of Beatrice to Otto IV. On 11 November 1208, Otto IV was again elected King of Germany in Frankfurt.
He was crowned Holy Roman Emperor by Innocent III on 4 October 1209.
Beatrice was only eleven years old and remained betrothed to Otto IV, approximately thirty-four years old. Marriage and death
The bride was fourteen years old and the groom about thirty-seven. However Beatrice soon fell sick and died only nineteen days after the marriage.
She was childless at the time of her death.