According to the 1861 Census of Canada, He and his wife had two children born in Ireland and six born in Canada. It is possible that Thomas and Hanorah married in Ireland around 1842, a year before their first child was born.
Sources
Ancestry.com and The Church of Jesus Christ of Latter-day Saints. 1861 Census of Canada [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2009.Ancestry Record 1570 #794664289
"Michigan Death Certificates, 1921-1952," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KF7T-4BH : 13 March 2018), Thomas Sullivan and Hanorah Burns in record for death of son Thomas Sullivan, 16 Sep 1930; citing Dearborn, Wayne, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,973,141
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