Original sentence: She was appointed Governess to Isabella of Valois, the nine-year old Queen consort of King Richard, and was in charge of the the Queen's household.The appointed successor to King Richard II was Roger Mortimer, 4th Earl of March, and the Lord-Lieutenent of Ireland He was the son of Edmund Mortimer, 3rd Earl of March and Philippa Plantagenet, 5th Countess of Ulster
Edited sentence: She was appointed Governess to Isabella of Valois, the nine-year old Queen consort of King Richard, and was in charge of the Queen's household.The appointed successor to King Richard II was Roger Mortimer, 4th Earl of March, and the Lord-Lieutenant of Ireland He was the son of Edmund Mortimer, 3rd Earl of March and Philippa Plantagenet, 5th Countess of Ulster