Augustus Pond

Augustus Pond was Amy Pond's father, Tabetha Pond's husband, Rory Williams] father-in-law, and River Song's grandfather.

Biography
Augustus and his wife Tabetha were lost to the Time Field and erased from reality sometime prior to Easter 1996, creating an alternate timeline in which then-seven-year-old Amy was raised by her Aunt Sharon. After reality was rebooted through the Doctor's use of the Pandorica and his exploding TARDIS, Augustus and Tabetha were restored to reality and attended Amy's wedding to Rory Williams on 26th June, 2010. (DW: The Big Bang)

Behind the scenes

 * Augustus Pond shares his first name with that of the first Roman emperor. Given Amy's noted interest in Roman history, this may or may not be a coincidence.