Thomas married Tryphosa Day on 11 Nov 1811. Tryphosa (daughter of John Day and Hannah Wasgatt) was born on 11 Dec 1793 in Bar Harbor, Hancock, Maine, USA; died about 1835 in Ellsworth, Hancock, Maine, USA. [Group Sheet] [Family Chart]

1. Julian Somes Atherton was born on 25 Mar 1815.
2. Dorcas Foster Atherton was born on 13 May 1819 in Tremont, Hancock, Maine, USA; died on 9 May 1897 in Tremont, Hancock, Maine, USA.
3. Peter Atherton was born on 10 Mar 1821 in Mount Desert, Hancock, Maine, USA; died on 4 Sep 1855 in Falmouth, Cumberland, Maine, USA.
4. Rlusiva Almira Atherton was born on 18 Sep 1812 in Mount Desert, Hancock, Maine, USA; died on 23 Sep 1898 in Falmouth, Cumberland, Maine, USA.
5. Adaline Atherton was born on 21 Jun 1817 in Mount Desert, Hancock, Maine, USA; died on 14 Jan 1903 in Mount Desert, Hancock, Maine, USA.
6. Tryphosa Thomas Atherton was born on 22 Jun 1823 in Mount Desert, Hancock, Maine, USA; died on 14 May 1893 in Rockland, Knox, Maine, USA; was buried in Oak Hill Cemetery, Brewer, Penobscot, Maine, USA.