Answer:
The grandmother who provided Jane Grey with her claim to the Tudor Throne is Jane's mother, Lady Frances was the daughter of Mary Tudor, Henry VIII's youngest sister. Through her grandmother, Lady Jane Grey was directly linked to the King, Henry VIII.
Explanation: Lady Jane Grey was the eldest daughter of Henry Grey, Duke of Suffolk and she was the great-grand-daughter of Henry VII. She was proclaimed Queen after the death of her cousin, the protestant King Edward VI, son of Henry VIII.