I'm trying to find some information on a mystery sibling of my great grandmother Elizabeth Anne Connolly's who supposedly was blown up when he kicked a box of dynamite in a fit of temper while working on the Croton Dam in Upstate NY. I don't have a name or date of death, or any information, other than, that his death would have occurred prior to 1912 when my great grandmother died. This male mystery Connolly would be the son of Cornelius Connolly and Minnie (Mary?) Connolly, and have the following as siblings: Elizabthe Anne, Maria, and Eugene. There may be additional siblings.
The family immigrated from Ireland to Manhattan and Brooklyn.