Complex sentence: Originally intending to give a third of her inheritance to her daughter and two thirds to her husband Peter, she named her daughter Beatrice as the sole heir of her lands in Faucigny along with her daughter's husband the Dauphin de Viennois instead.
Split into simpler sentences: Originally intending to give a third of her inheritance to her daughter and two-third to her husband Peter. She named her daughter Beatrice as the sole heir of her lands in Faucigny along with her daughter's husband the Dauphin de Viennois instead.