Addison Xavier Nairne is the eldest child of Xavier and Simone Nairne. He has two younger siblings, both sisters, Aurora and Allegra. The Nairnes are a mixed-blood family, their history dating back in time to the muggle play Macbeth.
Addison attended Hogwarts School of Witchcraft and Wizardry from 2051 - 2058. He was sorted into the house of Rowena Ravenclaw, following in his mother's footsteps. He served as his house's prefect for a couple of years before graduating in good standing.
He went on to attending university, specializing in arithmacy and more specifically the field of cursebreaking. Addison now serves as a full cursebreaker with Gringotts Wizarding Bank. And while he has travelled often in the past, handling many cases internationally, he has been spending more and more time centrallized in Britain.