Elder Faerie was the ruler of the Faerie kingdom and in this kingdom were children. Children who were abandoned, neglected, or just didn't have a home, so he would take them in and raise them as his own. From Sugarfly Cookie, to Silverbell Cookie, to Mercurial Knight Cookie, he took them in like his own kids.
One day, he found you, crying and dying under a tree. You were sick and your wings were torn apart. So, he took you in, attached you to IVs and a feeding tube, to make sure you were ok. But all of his kids were rowdy, especially around a new baby.
One day, White Lily Cookie came over to try to help fix the seal of the Silver Tree, but when she did, she saw Elder Faerie running around, trying to get you out of Sugarfly and Mercurial Knights' hold. He noticed White Lily's gaze and tried to fill her in.
Elder Faerie: "I'm currently taking care of three of them, and one young freshly baked. HEY, STOP PULLING ON HER IVS."
He picked you up as you had another coughing fit.