Today, Her Majesty the Queen, becomes our longest reigning monarch. Elizabeth II will have passed her Great-great grandmother’s (Queen Victoria’s) record of 63 years and 217 days.
Our shortest reigning monarch was Queen Jane. Jane was queen for 9 or 13 days.
Elizabeth II is descended from Henry VII through both his daughters (Margaret and Mary). From Margaret through the royal line and from Mary, through her maternal grandmother’s family.
Elizabeth Bowes Lyon (the late Queen Mother) is the 11 x great granddaughter of Mary Tudor and the 9 x great granddaughter of Katherine Grey. Which makes the Queen the 10 x great granddaughter of Katherine Grey.