Mold Castle was erected under instructions from the Earl also known by what name?
Hugh d'Avranches, Earl of Chester Hugh d'Avranches (  1047  – 27 July 1101), also known as Hugh the Fat (French: "Hugues le Gros" ) or Hugh the Wolf (Latin: "Hugo Lupus" ), was the second Norman earl of Chester (2nd creation) and one of the great magnates of early Norman England.
Rastislav of Moravia Rastislav or Rostislav, also known as St. Rastislav, (Latin: "Rastiz", Greek: Ῥασισθλάϐος / "Rhasisthlábos") was the second known ruler of Moravia (846–870). Although he started his reign as vassal to Louis the German, king of East Francia, he consolidated his rule to the extent that after 855 he was able to repel a series of Frankish attacks. Upon his initiative two brothers, Cyril and Methodius sent by the Byzantine Emperor Michael III in 863, translated the most important Christian liturgical books into Slavonic in his realm. Rastislav was dethroned by his nephew Svatopluk I who handed him over to the Franks.