It would be easy for all parties involved if we just say this.
My name is Severus Snape. I use to work at Hogwarts School of Witchcraft and Wizardry. I don't anymore.
No regrets either.
Be careful in dealing with a man who cares nothing for comfort or promotion, but is simply determined to do what he believes to be right. He is a dangerous uncomfortable enemy, because his body, which you can always conquer, gives you little purchase upon his soul. - Professor Gilbert Murray
Proudly representing the proud muns of the Lone Star State at hpsixwords
For the younger version of Severus please refer to someones_son