Minnie Hooper
From Tardis Wiki, the free Doctor Who reference
Minnie Hooper (referred to herself as Minnie the Menace) was an outgoing old woman and friend of Wilfred Mott.
After tracking down the Doctor, she wanted to be in a photo with a "handsome man", as she described the Doctor. She became The Master along with the rest of the Human Race. She would later attend Donna and Shaun's wedding. (DW: The End of Time)