Cornelia Plonk was presumably one of the first singers of the Great Ga'Hoole Tree, aside from The Snow Rose, who was the first in the family line. She is a member of the long line of Plonks, Snowy Owls that are famously known for their singing ability, which includes the most recent singer, Madame Plonk. She was the owl who brought the Great Grass Harp to the tree, although it is unclear who invented the harp itself.