One of the claimants in this war chose to abdicate
One of the claimants in this war chose to abdicate the Polish throne upon the death of his brother Charles IX. Another of the claimants had the support of the Holy Catholic League, and was assassinated by royal bodyguards; this was the one "of Guise". The surviving claimant, the lone Huguenot, founded the Bourbon dynasty and converted to Catholicism, supposedly saying, "Paris is well worth a mass." For 10 points, name this late-sixteenth-century War of Religion, which saw a battle for the French throne between three guys with the same name.
One of the claimants in this war chose to abdicate the Polish throne upon the death of his brother Charles IX.
War of the Three Henrys