Glenda Jones
From Tardis Wiki, the free Doctor Who reference
Ianto Jones' mother gave her son the number of the new mobile phone her husband bought in order to keep in touch with their son, while he was in hospital before dying.
At some point, Mrs Jones also passed away of unknown causes. (AUDIO: The House of the Dead)
Six months after Ianto Jones's death in 2009, Mr Jones, brought back from the dead by Syriath along with his child, tried to persuade him to let the entity free by advancing the idea of seeing again his mother. (AUDIO: The House of the Dead)