Here's the required Breton event to grab Wales if Anne's offered the crown. Is the ID still free?
Code:
event = {
id = 20056?
deathdate = {day = 1 month = january year = 1499 }
random = no
name = " The Empress of The Britons "
desc = " In 1498 Maredudd ap Llewelyn, the last native Welsh prince of Wales, died without an heir. The Welsh parliament meeting at Machynlleth offered the vacant throne to Anne of Brittany, creating a union between the two lands and uniting the Britons under a single ruler for the first time since the 5th century. "
style = 1
date = {day = 1 month = september year = 1498}
action_a = {
name = " A Triumph! "
command = { type = inherit which = WLS }
}