Idris Oakby was born in 1872 to parents of unknown blood status. She either was home schooled by her parents or attended Hogwarts School of Witchcraft and Wizardry, which she would have attended from 1883 to 1890. There is also a possibity that she may have been a Squib, in which case she would not have attended Hogwarts. If she was a Witch, she presumably purchased her wand from the Ollivander family when she was eleven.
After she graduated from Hogwarts, she set up a charitable organisation called Society for the Support of Squibs which supported Squibs and helped them live in the Wizarding World. She was presumably labelled as a 'Blood Traitor' for her actions helping Squibs.
Death and Post-Mortem
Oakby died in 1985 at the age of 113. She was on a Chocolate Frog Card after her death and she was awarded 'Wizard of the Month' in 2007.
Behind the scenes
- It is possible that Idris may have been a Squib herself.
The name "Idris" means "ardent lord" from Welsh udd, "lord, prince" combined with ris, "ardent", "enthusiastic", "impulsive".