Cordelia Kelerick is the fifth child and second daughter of Emma Regan and Ben Kelerick, the granddaughter of Claudia Kaufman, Thomas Regan, Rosalind Messina, and Vincent Kelerick, the great-granddaughter of Katherine Spencer, George Kaufman, Rebecca Westing, and Roland Messina, the younger sister of Edmund, Orlando, Regan and Duncan Kelerick.

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