De Crúis
de CRÚIS—XI—de Cruce, de Crosse, Cruice, Cruise, Cross; Norman 'de Cruys,' Latin 'de Cruce,' i.e., of the cross, from residence by the roadside or market cross (Middle English crouche, cruche); the name of an Anglo-Norman family who came to Ireland at the time of the invasion and obtained lands in Dublin and Meath. The chief seat of the family was at the Naul, where the ruins of their castle are still to be seen. In 1653, Peter Cruise of the Naul was transplanted to Connacht, and in 1691 many of the name were attainted. There was also an old family of Cruises in Co. Clare.
Alphabetical Index to Irish Surnames