The first and last time he spoke to them using their full name.
it was so happy until it wasn’t
Doctor Who as a bookseries: Series 7|Episode 13| The Name of the Doctor
And know this, Doctor Donna. You will never be forgotten. Our children will sing of the Doctor Donna, and our children’s children. And the wind and the ice and the snow will carry your names forever.
The Tardis in Doctor Who’s 50th Anniversary Light Celebration