Cefnllys Castle
... that a dispute between Llywelyn ap Gruffudd and Roger Mortimer over the rebuilding of Cefnllys Castle was one of the factors that led to Edward I's conquest of Wales?
... that a dispute between <a href="./Llywelyn_ap_Gruffudd" id="mwA8A" rel="mw:WikiLink" title="Llywelyn ap Gruffudd">Llywelyn ap Gruffudd</a> and <a class="mw-redirect" href="./Roger_Mortimer,_1st_Baron_Mortimer" id="mwA8E" rel="mw:WikiLink" title="Roger Mortimer, 1st Baron Mortimer">Roger Mortimer</a> over the rebuilding of <b id="mwA8I"><a href="./Cefnllys_Castle" id="mwA8M" rel="mw:WikiLink" title="Cefnllys Castle">Cefnllys Castle</a></b> was one of the factors that led to <a class="mw-redirect" href="./Conquest_of_Wales_by_Edward_I_of_England" id="mwA8Q" rel="mw:WikiLink" title="Conquest of Wales by Edward I of England">Edward<span id="mwA8U" typeof="mw:Entity"> </span>I's conquest of Wales</a>?