Who reigned first out of Henry VII's children?

Edward v1 was the first child of Henry VIII to reign.

- No, in fact, it was Edward VI, Henry's son with Jane Seymour. Edward I or Edward Longshanks reigned from 1272 to 1307. He was the son of Henry III.

I didnt mention anything about the son of Henry III i put son of Henry VIII which makes my answer correct. The first first child of Henry VIII to rule was Edward VI