From BiblePortal Wikipedia

Syrophoenicia [1]

Is Phoenicia properly so called, but during the period when by conquest it was united to the kingdom of Syria, it prefixed to its old name Phoenicia, that of Syria. The Canaanitish woman is called a Syrophoenician,  Mark 7:26 , because she was of Phoenicia, then considered as part of Syria. Matthew, who is by some supposed to have written in Hebrew or Syriac, calls her a Canaanitish woman,  Matthew 15:22 , because that country was really people by Canaanites, Zidon being the eldest son of Canaan,

  Genesis 10:15 . See Phoenicia, Phenicia, or Phenice .