1.
Keziah,
Keisha,
Kerensa,
Keshet,
Celeste,
Clytemnestra,
Cressida,
Crescentia /
Crescencia
2. Deer / Dear? Or possibly Dare? Or you could branch off even further and call him
Buck (from Deer), Dram (a measurement which is abbreviated DR), Seuss (Dr. Seuss) or Torry (from Doctor).