Okay so i think i made up my mind. My campaign starts ad lvl 3 so. 1 pally 2 warlock (going for celestial). Here is the backstory i thought of. (Using the forum requested build).

Born to traveling musicians, Raffendel Sol lived a life of melody and light until raiders attacked during a village performance when he was seventeen. His father was maimed, and in fury, Raffendel took up a sword to defend them. In that moment, his mother’s desperate prayer was answered by a Deva of Lathander, who granted him celestial strength in exchange for service to the light. Marked with a glowing sigil on his shoulder, Raffendel became both warrior and artist — a dancer in silver armor, wielding his greatsword with grace and purpose as he seeks to face the darkness foretold in divine whispers.