We are obsessed with celebrities in Ireland. We want to know every single aspect of their lives, even if they have other famous names in their family trees.
Some celebrities are easier to identify than others. For example, no one will ever question that John and Edward Grimes are identical twins.
However, there are a number of Irish celebrities you may not have known are related.
Mary Kennedy and Dermot Kennedy
An easy start considering they share the same last name.
Mary Kennedy is used to life in the limelight after her stellar broadcasting career, but she’s not the only famous face in the family as her nephew is music star Dermot Kennedy. Dermot is a hugely successful singer-songwriter who is now touring all over the world, from the US to Australia.
Una Healy and Declan Nerney

Saturday singer Una Healy comes from a musical background and is the niece of country singer Declan Nerney. Una’s uncle and godfather Declan has shared his pride in her success with The Saturdays and remembers her singing to him as a child – and he gave her a pound as a prize!
Holly Carpenter and Diarmuid Gavin

Influencer and former Miss Ireland Holly Carpenter is no stranger to the world of showbiz, but she shares the limelight with another famous face in her family – she’s the niece of famed gardener Diarmuid Gavin.
The Garrihy Sisters and Daithí

By this time the whole nation knows that the Garrihy sisters – Aoibhin, Ailbhe and Doireann – come from the same family, but what few may not know is that their cousin Daithí is a musician and regular at Irish festivals.
Mary Black, Danny O’Reilly and Roisin O

Danny O’Reilly and Roisin O are brother and sister and the children of legendary folk singer Mary Black.
Extra.ie will now put you to the test with this quiz to test if you deserve a PhD in random celebrity facts or if you need to get your head in the tabloids
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