Who was Henry VIII eldest brother?

Henry VIII had one older brother name Arthur, who died while their father, Henry VII, was still alive. Arthur married Catherine of Aragon, who later married Henry VIII, after Arthur's death. Catherine and Henry were the parents of Queen Mary Tudor, also known as Bloody Mary because of her persecution of non-Catholics.

Henry's brother was killed so he married his widowed wife. She did not produce a son so he asked the Pope for a divorce. The Pope said no and so Henry made his own religion with no taxes.