In the late Middle Ages there was a fashion for building chapels dedicated to the Virgin Mary – known as Lady chapels. Henry VII left money in his will for the building of such a chapel in Westminster Abbey, to hold the remains of Henry VI, who was expected at the time to be canonised. In the event the canonisation didn't happen, and Henry VII and his wife, Elizabeth of York, were buried in the tomb intended for Henry VI – who stayed at St. George's Chapel, Windsor, where he'd been reinterred in 1484 on the instigation of Richard III.
Henry VII's chapel became the resting place of choice for subsequent monarchs, and others "of royal blood", for the next 200 years. The 34 people listed by Wikipedia as being buried there include most of the Tudor and Stuart kings and queens regnant (notable exceptions being Henry VIII, Charles I and James II), and several of their consorts, as well as Mary, Queen of Scots. The last monarch to be buried there was George II.
© Haydn Thompson 2021