▁of ▁Med ieval ▁History ▁at ▁the ▁University ▁of ▁Vall ad olid . ▁Enter ▁ 1 9 8 1 ▁and ▁ 1 9 8 4 ▁was ▁de an ▁of ▁the ▁Fac ulty ▁of ▁Arts ▁of ▁the ▁University ▁and ▁later ▁served ▁as ▁director ▁of ▁its ▁Department ▁of ▁Med ieval ▁History . ▁Under ▁his ▁tut el age ▁was ▁formed ▁a ▁generation ▁of ▁pr estig ious ▁medieval ists , ▁including ▁María ▁Isabel ▁del ▁Val , ▁Juan ▁Carlos ▁Martín ▁Ce a , ▁As un ción ▁Est eb an ▁Re cio , ▁Áng el ▁Martínez ▁Cas ado ▁and ▁Juan ▁Antonio ▁Bon ach ía ▁Hern ando . ▁ ▁He ▁was ▁a ▁found ing ▁member ▁and ▁chairman ▁of ▁the ▁editor ial ▁Amb ito , ▁a ▁member ▁of ▁the ▁editor ial ▁board ▁of ▁Spanish ▁newspaper ▁El ▁Mundo ▁century , ▁and ▁a ▁member ▁of ▁the ▁advis ory ▁board ▁of ▁the ▁journal ▁Historia 1 6 . ▁ ▁In ▁ 1 9 9 4 , ▁he ▁was ▁cur ator ▁of ▁the ▁exhibition ▁El ▁test amento ▁de ▁Ad án . ▁In ▁July ▁ 2 0 0 2 , he ▁ ▁was ▁appointed ▁director ▁of ▁the ▁Institute ▁of ▁History ▁of ▁Sim anc as . ▁On ▁November ▁ 1 6 , ▁ 2 0 0 1 , ▁he ▁was ▁elected ▁a ▁full ▁member ▁of ▁the ▁Real ▁Academia ▁de ▁la ▁Historia , ▁to ▁fill ▁the ▁vac ancy ▁left ▁by ▁Pedro ▁L ain ▁En tr al go , ▁entering ▁the ▁same ▁in ▁June ▁ 2 0 0 2 . ▁ ▁He ▁was ▁one ▁of ▁the ▁largest ▁and ▁most ▁pr estig