This link should help you.

http://museum.gov.ns.ca/arch/infos/mikmaq1.htm

Members of the Mi’kmaq First Nation historically referred to themselves as L’nu, but, the Mi’kmaq’s French allies, whom the Mi’kmaq referred to as Ni’kmaq, meaning “my kin”, initially referred to the Mi’kmaq, (as is written in Relations des Jésuites de la Nouvelle-France) as “Souriquois” (the Souricoua River was a travel route between the Bay of Fundy and the Gulf of St. Lawrence) or “Gaspesians”. Over time their French allies and succeeding immigrating nations’ peoples began to refer to the Lnu’k as Ni’knaq, (invariably corrupting the word to various spellings such as Mik Mak, Mic Mac, etc.) The British originally referred to them as Tarrantines. The word Míkmaw is an adjectival form of the plural noun for the people, Míkmaq.