Arabella Whitelaw was a Shadowhunter and the mother of eventual Inquisitor Imogen Herondale. She is the maternal grandmother of Stephen Herondale.


Arabelle was presumably not very close to her daughter, Imogen. However, she had a very close relationship with her grandson Stephen. Arabella taught him how to quilt—a hobby Imogen jealously mocked him for, causing the boy to seemingly quit the hobby after her death, though he continued to quilt in his own time.


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