Guntram and Childebert II were both standing on a hill facing the London Keep were Cerdic had fortified himself in.
Guntram: " *coughs blood* Childebert , even though we faced each other at times on the battlefield you know well that i did what had to be done just to preserve peace and order to our kingdom , i grow sick and tired , my first son died by poison and my other two by dysentery , i have no direct heir , and if i die like this my beloved land will fall into civil war with all kind of minor nobles will be killing each other for some acres.
That must not happen! *coughs blood* thats why i agreed with the Bishop of Paris that if i would invade and convert Wessex they would support your claim for the crown after my death , i also signed documents proclaiming that you are the one i appointed as my heir , with both my documents and the church behind you no one will be foolish enough to oppose you.
*coughs blood * *points Cerdic's Keep* thats the last bastion of resistance in wessex , after that notthing stands in my way to move and Convert Northumberland , but i fear i will not live long enough to see that day. Childebert , promise me that you will never negotiate for peace with these barbarians untill they embrace the cristianity , and that you will not stop untill all of england praises the word of our lord jesus christ".
Childebert II : "that its my duty my lord , i promise you that i will fulfill it or die tryng to".
Guntram : " i expect notting less , let us return to the camp , i need to rest".
Orders:
Increse Navy
Continue wonder: St.Clotild Basilica
Let the Burgundian Swordsmen Siege the keep , build siege engines (catapults , trebuchets , balistas , siege towers , siege rams and such) but do not engage in melee combat , just starve them (only use artillery to borband them)
use the horsement to quickly annex all the territories left and then join the swordsmen in the siege.
Diplomacy
From Guntram King of Franks
to Cerdic of Wessex
Heathen , you have lost , surrender and be exiled , im sure the satan worshipping people of norway or iceland will welcome you , fight and be slaughtered , my burgundian swordsmen are battle hardened veterans , armed with the best equipment avariable (1000 burgundians cost as much as 4000 footmen

) and my Horsemen can tear trought your ranks as if you were wet paper and hunt your men down and squash them as bugs , you cannot win , you cant even hurt us. may god have mercy on your soul.