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.
Neath Castle Neath Castle (Welsh: "Castell Nedd" ) is a Norman castle located in the town centre of Neath, Wales. Its construction was begun by Robert, Earl of Gloucester, the nominal Lord of Glamorgan, at a date estimated between 1114 and 1130. It is also referred to as "Granville's Castle", after Richard I de Grenville (or Granville or Glanville; died post 1142), Lord of Neath, who has also been credited with its construction. The town of Neath takes its Welsh name, "Castell-nedd", from the castle.