Hello Cousin!!! I'm 99% certain of that!!!
My grandmother Mary Francis Comber known as Molly was born in 1898 in Loughrea, the eldest daughter of Patrick Comber and Mary Moran. Molly had a younger sister Ellen born in 1903 who married a Kennedy. I'm looking at a picture of Ellie Kennedy right now, that was taken when my older brother went to Galway about 15 years ago. The picture is of a Christy Kennedy, my brother Richard Harrington, Ellie Kennedy and Martin Kennedy. If my guess is correct, the Christy Kennedy in the picture is the son of Ellie.
I also know of a cousin Joseph Kennedy who is close to my own age (I'm 43), maybe a year of two younger. He left Ireland about 15 years ago to teach school in Texas. On His way to Texas he stopped and visited with us in Massachusetts, spending the christmas holiday season with our family. He could pass for my twin!!!
Additionally, going back another generation. My grandmother's father, who was also a Patrick Comber was one of 11 children of a Patrick Comber and Mary Hooban. My grandmother's aunt Bridget Comber, born in 1849 married a Jerimia Sheil and they had 8 children, one was named Julia Sheil, born on Feb. 2 , 1887. Another of my grandmother's aunts, Anne Comber b.1848 married a James Rafferty, their daughter Mary Rafferty married a John Sheil.
I have tons of info on our Combers going back to the fist Patrick Comber I have, who was born in 1815.
I think we are actually related twice in your line, first with Ellen Sheil who may very well be the daughter of my Mary Raffety and John Sheil, and then again in the next generation when Bob Kennedy married Ellie Comber.
Where are you now????
Many of the Sheils emigrated to Massachusetts. Which is where most of my family resides.
By all means feel free to email me direct at firstname.lastname@example.org