Thanks to the generosity of Jim Murray’s offer of a death certificate  look-up to the New York City Genealogy Facebook Group, I discovered a few more details about my Dougherty line. (It should be noted that Mr. Murray made this offer of a look-up as a way to honor the passing of John Martino who was a fundamental part of the I. G. G. at http://www.italiangen.org, and from which I was able to obtain the death certificate number to give Mr. Murray. This database is a hugely valuable resource for anyone researching in New York City and Mr. Martino’s presences will be greatly missed, I am sure.)
The exciting bits were, of course, the names of Patrick J.’s parents, Patrick and Margaret Convoy. Finding Patrick alone wouldn’t have led very far as the name is as common as John or James in the USA, but with the addition of his mother’s name, especially her maiden name, I was launched on a wide array of wildcard, shotgun-style browsing over the last few days.
Most of my time was spent in the online resources of FamilySearch.org and I feel that I’ve made a possible connection in their Ireland Births and Baptisms, 1620-1881 database . This database is an index only, which means I’ll be ordering the relevant films when able. However, it does spark some curiosity and for potential connections to be made – a speculative outline, if you will – of the next generation back for my Dougherty line.