Webster’s Revised Unabridged Dictionary · 1913
Captaincy
Cap′tain·cy (kăp′tĭn·sy̆), n.; pl. Captaincies. The rank, post, or commission of a captain. Washington.
Captaincy general, the office, power, territory, or jurisdiction of a captain general; as, the captaincy general of La Habana (Cuba and its islands).