Saintonge War
...that, although Louis IX of France won the Saintonge War against England, he chose not to annex Guyenne on account of dynastic sensibilities?
...that, although <a href="./Louis_IX_of_France" id="mwBVc" rel="mw:WikiLink" title="Louis IX of France">Louis IX of France</a> won the <b id="mwBVg"><a href="./Saintonge_War" id="mwBVk" rel="mw:WikiLink" title="Saintonge War">Saintonge War</a></b> against <a href="./England" id="mwBVo" rel="mw:WikiLink" title="England">England</a>, he chose not to annex <a href="./Guyenne" id="mwBVs" rel="mw:WikiLink" title="Guyenne">Guyenne</a> on account of dynastic sensibilities?