Michael married Mary Ellen Galvin on 25 Jan 1893 in Bryn Mawr Chapel, Bryn Mawr, PA, US. Mary (daughter of Patrick Galvin and Margaret Devine) was christened on 1 Jul 1865 in Ballinahown Parish, Co. Westmeath and Offaly, IE; died on 3 Feb 1951 in Bristol, CT, US; was buried in St. Joseph Cemetery, Bristol, CT, US. [Group Sheet] [Family Chart]

1. John Patrick Grennan was born on 8 Jun 1894 in Ardmore, PA, US; died on 12 Dec 1965 in Bristol, CT, US; was buried in St. Joseph Cemetery, Bristol, CT, US.
2. Michael Joseph Grennan was born on 30 Jun 1898 in Bristol, CT, US; died on 19 May 1989 in Bristol, CT, US.
3. Mary Catherine Grennan was born on 16 Jun 1899 in Bristol, CT, US; died on 21 Mar 1900 in Bristol, CT, US.
4. Delia M. Grennan was born on 4 Jun 1901 in Bristol, CT, US; died on 13 Oct 1987 in Bristol, CT, US.
5. Ann Ellen Grennan was born on 14 Mar 1903 in Bristol, CT, US; was christened on 22 Mar 1903 in Bristol, CT, US; died on 2 Jul 1991 in Farmington, CT, US.
6. William Thomas Grennan was born on 17 May 1906 in Bristol, CT, US; died in 1953 in Bristol, CT, US.

John married Bridget Connell [Group Sheet] [Family Chart]