These two McBrien – Allingham families have led to some confusion in evaluation of family relationships. I have written about odd coincidences in genealogy before but this one is much more confusing.

I first encountered the family of John McBrien and Elizabeth Allingham when I expanded my study of the genealogy of the Allingham family of the Glencar area of Killasnet parish in County Leitrim Ireland. The first record we have of my great great grandmother Ruth Allingham is her 1854 marriage in the small Church of Ireland near Glencar Lake . In 1856 Elizabeth Allingham (who is probably her sister) married John McBrien in the same church.
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