Lorna Bucket
From Tardis Wiki, the free Doctor Who reference
Lorna Bucket was from Gamma Forest and had met the Doctor when she was a young girl. He had told her to 'run'. She told Amy Pond she had joined the Clerics because she wanted to meet the Doctor again. She sewed and gave Amy Pond something for her daughter which later revealed the identity of River Song.
She stayed behind after the other Clerics 'ran away' and overheard Madame Kovarian talking about a trap. She then tried to warn the Doctor's friends about what she had overheard. Lorna died in the battle against the Headless monks. The Doctor consoled her in her last moments, pretending he remembered her. (DW: A Good Man Goes to War)