Yes, Eamon is well document, but his older brother my Gf John disowned him ,something to do with marrying outside of his faith . The story I heard is that Eamon married into the Jewish faith ,he was married in the Pepper Canister in Baggot st. Not sure if that is Jewish or not? When Iwas a child I visited the Medicial Missionaries of Mary Hospital and my parents wer given a tour,we had a visitor from the vatican and the sister were all excited.Did the whole high tea thingthen the tour ,I was only 7 or 8 at the time but i have a vivid memory of it.We came to the childrens ward and the ward had a dedication plaque with Eamon Martin as the benefactor . When the sister asked if my dad was any relation of Eamon Martin and he said Eamon was his Uncle she then said we too must be cousins of Mother Mary,that Eamon and MMM were 2nd or 3rd cousins. My Dad was Kevin Martin the Irish Olympic Boxer 1848 and 1952. His mum was an O'Byrne ,and there was a lane way off Pearse St called Dan O'Byrnes Lane which is supposed to be called after her father who was born in Dublin in 1857. I paid Eirclann to do research but all the really did was confirm the information I had given them.