▁ 1 8 0 3 , ▁in ▁order ▁to ▁pay ▁for ▁his ▁French ▁arm ies ▁during ▁the ▁War ▁of ▁the ▁Third ▁Co al ition . ▁ ▁The ▁first ▁king ▁( Louis ▁I ) ▁died ▁young ▁in ▁ 1 8 0 3 , ▁and ▁his ▁under age ▁son ▁Charles ▁Louis ▁succeeded ▁him . ▁His ▁mother , ▁Maria ▁Lu isa ▁of ▁Spain , ▁was ▁appointed ▁reg ent . ▁However , ▁since ▁E tr uria ▁was ▁trouble d ▁with ▁sm ugg ling ▁and ▁esp ion age ▁Napoleon ▁an nex ed ▁the ▁territory , ▁thus ▁becoming ▁the ▁last ▁non - B on ap arte ▁Italian ▁kingdom ▁on ▁the ▁Pen ins ula . ▁Since ▁Spain ' s ▁only ▁hope ▁of ▁compens ation ▁lay ▁in ▁Portugal , ▁co - operation ▁with ▁the ▁em peror ▁became ▁more ▁important . ▁ ▁In ▁ 1 8 0 7 , ▁Napoleon ▁dissol ved ▁the ▁kingdom ▁and ▁integrated ▁it ▁into ▁France , ▁turning ▁it ▁into ▁three ▁French ▁départ ements : ▁Ar no , ▁Méd iter ran ée ▁and ▁Om br one . ▁The ▁king ▁and ▁his ▁mother ▁were ▁promised ▁the ▁throne ▁of ▁a ▁new ▁Kingdom ▁of ▁Northern ▁L us it ania ▁( in ▁northern ▁Portugal ), ▁but ▁this ▁plan ▁was ▁never ▁realized ▁due ▁to ▁the ▁break ▁between ▁Napoleon ▁and ▁the ▁Spanish ▁Bour b ons ▁in ▁ 1 8 0 8 . ▁After ▁his ▁down fall ▁in ▁ 1 8 1 4 , ▁T usc any ▁was ▁restored ▁to ▁its ▁H abs burg ▁Grand ▁D uk es . ▁In ▁ 1 8 1 5 ,