Hello Shiraz,
My grandfather, Joseph Connolly, was Sean's brother. He was located in a different area than Sean and the other Connolly family members at the GPO. Weren't some of his other sisters also involved in the Uprising? Unfortunately, I do not have too much information because my mother (Monica) and her siblings (Vera, Joe, and Mary) are all passed away and I never thought to ask them while they were living.
Any information you could give me regarding the Connollys (related to Sean not James) would be great.
Thanks,
PS I am VERY new to the site, so I am not sure if this is correct. My apologies if it is not.