Jackie Tyler's mother
From Tardis Wiki, the free Doctor Who reference
The mother of Jackie Tyler, née Prentice, was Rose Tyler's maternal grandmother.
On 1 February 1967, she had a baby girl, Jackie, with her husband. (TV: Father's Day)
Some time later, she bought Jackie a real bamboo coffee table. (PROSE: Rose)
Jackie mentions that she told her Rose was an au pair in Paris as an explanation for her whereabouts for the missing year. (TV: World War Three)