Final answer:
Henry VIII was the English king who had six wives. His marital history notably includes the execution of Anne Boleyn and the birth of his successor, Edward VI, by Jane Seymour.
Step-by-step explanation:
The English king who had six wives was Henry VIII. His quest for a male heir to secure the Tudor dynasty led to multiple marriages. He first married Catherine of Aragon but divorced her when she failed to produce a son, leading to England's separation from the Catholic Church. His second wife, Anne Boleyn, was executed after failing to produce a male heir as well. His third wife, Jane Seymour, gave birth to Edward VI, who succeeded Henry but died young. Henry went on to marry three more times, but none of these marriages resulted in a surviving male heir.