In May 1490, Arthur was created warden of all the marches towards Scotland and the Earl of Surrey was appointed as the Prince's deputy.Charles H. Hunter Blair, "Wardens and deputy wardens of the Marches of England towards Scotland in Northumberland and the English wardens of Berwick upon Tweed", Archaeologia Aeliana, 28 (1950), p. 60. From 1491, Arthur was named on peace commissions. In October 1492, when his father travelled to France, he was named Keeper of England and King's Lieutenant. Following the example of Edward IV, Henry VII set up the Council of Wales and the Marches for Arthur in Wales, in order to enforce royal authority there. Although the council had already been set up in 1490, it was headed by Jasper Tudor, Duke of Bedford. By 1493, Arthur had been sent with his household to Ludlow Castle, near Wales. In March 1493, Arthur was granted the power to appoint justices of oyer and terminer and inquire into franchises, thus strengthening the council's authority. In November of that year, the Prince also received an extensive land grant in Wales, including the County of March.
iN may 1490 arThUr waS CReateD wARdEn OF AlL the marches towArds Scotland aND tHe earL of SUrrEY was Appointed as the prInCE'S depUTyCHarles h hunter blaIr "waRdens aNd DepuTY warDens of the marches OF eNglAnd towArds sCotlaNd In northumberlanD and THE enGlish WArDenS Of bErwick UPoN tWeEd" archAeoLOGia aeLiaNa 28 (1950) P 60 From 1491 aRthur waS named on peace CoMMissiOns IN ocTober 1492 when HIs fatHEr TRaVElled to FranCE He was nAmeD keeper of enGlanD and king's lieuTEnANt followInG tHE eXamPlE of edwArd Iv HenrY ViI set UP thE council of waleS anD The marChEs For arTHUr iN wAlEs IN order to enfoRce RoyAL aUThoritY theRe althougH thE counCiL haD Already bEEn set up In 1490 IT Was HeAded by jaSpeR TudoR DUKE of BEdFord By 1493 aRthur HAd beEn senT WiTh his HouseHOld To LudlOw CAstle near waleS in mARch 1493 ArthUr was grANtEd the powEr To AppoInt jUsTicEs Of oyER aNd tErMIner aNd iNquire into frAnchiSes tHUs sTreNgthEnIng the CounCil's auThoRity In NovembeR Of tHAt Year THe prinCe also rEceIVed aN eXtensiVe lANd GrAnT iN wales InclUdiNg the county of mARcH