Amlaíb's byname, cuarán, is usually translated as sandal or shoe. It derives from the Old Irish word cúar meaning bent or crooked. It is first applied to him in the report of the battle of Slane in 947 in the Annals of Ulster. The usual translation may be misleading. The epithet probably refers to a distinctive style of footwear. Benjamin Hudson points to the description of a cuarán in a twelfth-century satire, where it is made of leather folded seven times and has a pointed toe. In Aislinge Meic Con Glinne and Scél Baili Binnbérlaig, the cuarán is waterproof. In the first story Mac Con Glinne cleans his by dipping them in his bath; in the second, a cuarán serves as a vessel to drink from. That the cuarán was a piece of footwear specific to Dublin is suggested by statements in other stories that have cobblers in the town owing a cuarán in taxes.