Yasmin Khan's grandfather

A photograph of him and Umbreen. (TV: Demons of the Punjab)

You may be looking for the character from Torchwood: Fallout.

Yasmin Khan's grandfather was the second husband of Umbreen, the father of Najia Khan, and the grandfather of Yaz and Sonya.

Like his wife, he was a Muslim, whereas Umbreen's first husband Prem had been a Hindu. He took Umbreen out dancing every Wednesday. (TV: Demons of the Punjab)

When he died, Najia said that Yasmin carried him in her heart. (PROSE: The Good Doctor)