The Scottish Tribe referred to in the crossword solution is a CLAN, which is a traditional kinship group found in Scotland and Ireland. Clans are made up of families who share a common ancestor and are typically led by a chief. Clans often have their own tartan, or patterned cloth, and crest, which is a symbol that represents the CLAN. Clans also have their own motto, which is a phrase that expresses the values of the CLAN.