name meaning: Cadogan \c(a)-do-gan\ as a boy's name is of Old Welsh origin, and the meaning of Cadogan is "battle glory and honor". From Cadwgan or Cadwgawn. Name of several Welsh princes in the early Middle Ages, and two characters in the "Mabinogi". The name was revived in the 19th century.
Similar baby names are Cadog and Cadman.