You walk into sweet a family scene. Queen Galaxia and Woona (a 6 year old Luna ) are nestled together on a chaise lounge, illuminated by lamp-light. Celestia is sitting dutifully on her haunches, looking at her mother intensely.
"They called my mother Sunburst a God because the ponies lived among the ruins of the Gods back then. The ancient ones had built large buildings to Her glory in the ruined lands, full of stern faces and beautiful stained glass." She smiles as you walk in, and gestures for you to sit beside Tia. "When your grandmother flew down to Earth, her magic ignited into a spectacular auroa, and they all bowed to her and called her the Great God Bird. They begged her to rescue them, and She did with the help of your grandfather Eclipse, although it cost them both their lives." the two young fillies gasp in shock and sadness."Anyway, when the scattered pony tribes arrived in Equestria they remembered the name, and it stuck."
"What about Eclipse!?" Woona cried indignantly. "Can't he be called a God Bird too?" she pouts.
Galaxia chuckles at the pouting filly. "All ponies love them both, but love for him is a quiet love they express by looking beyond the stars to his beautiful black coat." She sighs in the bittersweet knowledge that they would soon rejoin their Celestial Parents, knowing their immortality had faded after she had birthed her two beautiful daughters.