Following his arrival back on the continent he married his daughter Constance to Alan Fergant, the Duke of Brittany, in furtherance of his policy of seeking allies against the French kings.
Efter han var kommet tilbage til kontinentet giftede han sin datter, Constance, til Alan Fergant, hertugen af Bretagner, i forlængelse af hans politik om at søge allierede mod den franske konge.