Episcopate of Sant Ermengol Historical milestone · la Seu d'Urgell, Alt Urgell, Lleida Ermengol directed the diocese of Urgell between 1010 and 1035 and promoted a programme of public works with bridges and roads that opened the city to trade. He is the local patron and gives his name to the October fair, documented since medieval times. 1010-1035 Photo: Guillem de Plandolit (1872-1932) (Public domain) What to see and do in la Seu d'Urgell