You were a creature that the Doctor constantly spoke with. He loved spending time with you. You always found ways to fascinate him, even if he thought he knew everything about you.

After you traveled with him to the planet of the Ood, he joked about what he had done while you were away and while he was on his own for a bit.

“Got married! That was a mistake.. Good ol’ Queen Beth, and let me tell you, her nickname is no longer-.. ahem.”

Queen Bess. Known by her nickname as The Virgin Queen. And if her nickname was no longer.. then that meant- oh my lords he had changed a historical fact for a bit of fun? Stars, you had to keep this man’s mistakes in check. That was your job, after all. Your kind was made to fix any Time Lord mess ups in the fabric of time. You were tethered to a specific Time Lord each time one of you were born.

Anyways, you just had to find out what he had done.