| Sources |
- [S502] Meehan, Helen Montgomery, Letter from Helen Meehan Montgomery, (Location: Mount Charles, Donegal, Ireland; Date: Jan 2012;).
- [S1961] Ancestry.com, Web: Ireland, Census, 1911, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2013;), Class: RG14.
Record for Robert Montgomery
http://www.census.nationalarchives.ie/reels/nai002054529/
http://search.ancestry.com/cgi-bin/sse.dll?db=WebSearch-4050&h=13840264&indiv=try
- [S2642] Ancestry.com, New York, New York, Birth Index, 1878-1909, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2014;).
Record for Robt Montgomery
http://search.ancestry.com/cgi-bin/sse.dll?db=NYCbirthindexes&h=338813&indiv=try
- [S4023] Ancestry.com, New York, New York, U.S., Index to Birth Certificates, 1866-1909, (Location: Lehi, UT USA; Date: 2020;), New York City Department of Records & Information Services; New York City, New York; New York City Birth Certificates; Borough: Brooklyn; Year: 1906.
Record for Robert Montgomery
https://search.ancestry.com/cgi-bin/sse.dll?db=61779&h=224310&indiv=try
- [S4343] Ireland, Census, 1926, (Name: National Archives of Ireland; Location: Dublin, Ireland; Date: 2026;), Montgomery, Robert (1866-1927) Ballybrollaghan, Donegal, Ireland https://nationalarchives.ie/collections/search-the-1926-census/census-record/#surname__icontains=Montgomery&county=Donegal&limit=30&a_id=2678165.
National Archives of Ireland
Census 1926
https://nationalarchives.ie/collections/search-the-1926-census/census-record/#surname__icontains=Montgomery&county=Donegal&limit=30&a_id=2678165
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