Complex sentence: Her half-brother, Edward VI, ruled until his death in 1553, bequeathing the crown to Lady Jane Grey and ignoring the claims of his two half-sisters, Elizabeth and the Roman Catholic Mary, in spite of statute law to the contrary.
Split into simpler sentences: Her half-brother, Edward VI, ruled as king until his death in 1553. He bequeathed the crown to Lady Jane Grey, cutting his two half-sisters, Elizabeth and the Roman Catholic Mary, out of the succession, in spite of statute law to the contrary.