Declan's sister is Bernadette Galbraith, she's 13 years old.
Yes, he has a little sister, Bernadette Galbraith.
Yes, Declan stated on his blog that he had already change is middle name to "Jarek" and so does his sister change her first name to Amelia. Declan John Galbraith's full name is now Declan Jarek Galbraith not John anymore. Bernadette Cheyenne Galbraith full name is now Amelia Cheyenne Bernie Galbraith.
Yup, he has a sister,her name is Bernadette ,she's younger than him for 4 years :)
Yes one sister her name is Bernadette
Declan Donnelly's birth name is Declan Joseph Oliver Donnelly.
Declan does not reveal personal privacy. But his name, the name of his mom, dad, sister, and even his dog's name, mean something religious, so I would say he's Catholic, but I'm not sure.
His mum's name is Siobhan. His dad's name is Alec. His sister's name is Bernadette and his dog's name is Chrissy.
Declan McMahon's birth name is Declan James McMahon.
Declan Curry's birth name is Declan Gerald Curry.
Declan Reynolds's birth name is Declan Paul Reynolds.
Declan Mulholland's birth name is Thomas Declan Mulholland.
I think Declan Blake is a good name! You may want to consider some other middle names aswell such as: Declan Luke Declan Louis Declan Reece/Rhys Declan Frazer Declan Jack Hope I helped!