Hello, cousin! The people you mention were my grandmother's first cousins and Uncle.
My great grandfather was Thomas Hamill, born May 1852, married to Ellen Hanly in 1880 and had the following children: Mary Agnes, Thomas Joseph, Bernard William, Michael Francis, Eleanor Loretta, and Peter James.
Eleanor Loretta was my maternal grandmother.
Thomas was a carpenter and died in 1905 from TB.
None of Thomas's sons ever married. Mary married a man named John J. Connell and had 2 surviving children. Eleanor Loretta had 2 daughters, one of whom is my mother.
The story I have is that there were 9 Hamill brothers. Do you have any info about that? Best wishes, Loraine Izzo