Christopher m. Greek Χριστός 'Christ' + Greek φέρειν 'to bear'.
The name of a 3rd C martyr, the earliest known bearer of the name, a 10th C Byzantine co-emperor, and a 15th C king of Denmark, Sweden, and Norway.
The English diminutive Kyt is witnessed in 1379 in the relational byname Kytsoñ (WRYPT1 p. 318).