Sharon (The Big Bang)

Sharon was Amelia Pond's aunt. She became Amelia's guardian in 1996 or some time prior after Amelia lost her parents to the crack, which erased them from existence, and moved with her to Leadworth when Amelia was young. (DW: The Eleventh Hour).

In a timeline in which the all stars and worlds, excluding the Earth and moon, were destroyed in 102AD, she took Amelia to the National History Museum in 1996, where she dragged her around it until Amelia ran away and found the Pandorica, a prison box of legend. After Amelia went into hiding, Aunt Sharon looked for her, but ultimately failed. It is unknown what she did after this, but was later wiped from time by the time field cracks due to the TARDIS exploding.

After the universe was restored and the cracks in time were closed, restoring the timeline, Aunt Sharon attended Amy's wedding and witnessed the return of the Doctor on June 26th 2010. (DW: The Big Bang).