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SINEAD KEENAN as DCI Jess James in Unforgotten© ITV

Unforgotten star Sinéad Keenan has famous siblings

The Irish actress stars alongside Sanjeev Bhaskar

Francesca Shillcock
Senior Features Writer
Updated: February 24, 2025
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Sinéad Keenan has been the lead of Unforgotten since series five, which saw the actress take over from Nicola Walker after DCI Cassie Stuart's shocking death. The Irish star plays DCI Jessica James in the popular ITV detective drama, which also stars Sanjeev Bhaskar.

While Sinéad is a famous face thanks to her illustrious TV career, did you know that she's not the only big name in her family? Find out all about her famous siblings below. 

WATCH: Sinéad Keenan joined the show in season five

Who are Sinéad Keenan's famous relatives?

Sinéad has two siblings who are also in the acting business. Her younger sister is Gráinne who has appeared in Victoria, Doctors and Blood alongside Line of Duty star Adrian Dunbar. And now, the sisters have appeared together in Unforgotten! Gráinne plays Jessica's sister Debbie.

Two blonde women posing for photos on red carpet© PA Images via Getty Images
Sinead's sister Grainne Keenan is also an actress

Meanwhile, Sinéad's brother, Rory, is also an actor who has appeared in Somewhere Boy, Peaky Blinders and more. But the connections don't stop there, because Rory is married to fellow actress Gemma Arterton.

rory and gemma© Photo: Getty Images
Rory is married to Gemma Arterton

What else has Sinéad Keenan been in?

Although the actress is known currently for her role in Unforgotten, she's had many previous roles in other popular TV shows.

Sinéad has appeared in Little Boy Blue, Derry Girls, Showtrial, Three Families and Fair City. She is also well known for her role in BBC Three's Being Human.

Female wearing police lanyard sitting in office© ITV
The actress plays DCI Jess James in Unforgotten

After landing the lead role in Unforgotten, Sinéad shared her delight in a statement. "I have long been an admirer of Chris Lang’s work so I am absolutely delighted to be joining the Unforgotten team," she said in 2022. "I’m very much looking forward to working with the extraordinary cast led by the brilliant and incredibly lovely, Sanjeev Bhaskar. And I’m hoping that if I play my cards right I might even get to take a peek in Sunny’s backpack!"

Ahead of Sinéad's season five debut, Sanjeev praised his co-star as "very, very good". "She’s got a very different energy to Nicola, as Jess has to Cassie, and that’s part of the story," he said. "So all of that kind of helps. I’ve worked with Sinéad once. We’d done 30 seconds of a scene in a sitcom a few years ago. So the relationship with Sinéad felt new, and certainly the relationship between Sunny and Jess felt new as well."

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