By marrying his daughter Adeliza to Henry I of England, who was also the father-in-law of the emperor, he greatly increased his prestige. However, Henry V died in 1125 and Godfrey supported Conrad of Hohenstaufen, the duke of Franconia, against Lothair of Supplinburg. Lothair was elected. Lothair withdrew the duchy of Lower Lorraine and granted it to Waleran of Limburg (c. 1085 – 1139), the son of Henry, whom Henry V had deprived in 1106. Nonetheless, Godfrey maintained the margraviate of Antwerp and retained the ducal title (which would in 1183 become Duke of Brabant).