Complex sentence: In the year 1620 Maria Eleonora married, by her mother's consent but against her brother's will, the Swedish king Gustavus Adolphus, to whom she bore a daughter, Christina, in 1626.
Split into simpler sentences: In the year 1620 Maria Eleonora married, with her mother's consent but against her brother's will, the Swedish king Gustavus Adolphus. She bore a daughter, Christina, in 1626.