Alexander married Alice Cotton Twitchell on 23 Dec 1866 in Lancaster, Coos, New Hampshire, USA. Alice (daughter of Hiram Twitchell and Alice Corbett Child) was born on 27 Mar 1840 in Bethel, Windsor, Vermont, USA; died on 16 Feb 1916 in Lancaster, Coos, New Hampshire, USA; was buried in Lancaster, Coos, New Hampshire, USA. [Group Sheet] [Family Chart]

1. Mary Thompson was born on 1 Mar 1868 in New Hampshire, USA; died on 13 Sep 1911 in Waterbury, Washington, Vermont, USA; was buried in Lancaster, Coos, New Hampshire, USA.
2. Mabel Chase Thompson was born on 12 May 1870 in Lancaster, Coos, New Hampshire, USA; died on 5 Jun 1918 in Lancaster, Coos, New Hampshire, USA; was buried in Lancaster, Coos, New Hampshire, USA.
3. Alice Twitchell Thompson was born on 7 Aug 1872 in Lancaster, Coos, New Hampshire, USA; died on 26 Jan 1913; was buried in Lancaster, Coos, New Hampshire, USA.
4. Grace Thompson was born on 21 Apr 1876 in Lancaster, Coos, New Hampshire, USA; died on 18 Oct 1963; was buried in Arlington, Arlington, Virginia, USA.
5. Agnes Sarah Thompson was born on 23 Mar 1878 in Lancaster, Coos, New Hampshire, USA; died on 6 Mar 1928 in Montpelier, Washington, Vermont, USA; was buried in Green Mount Cemetery, Montpelier, Washington, Vermont, USA.
6. Persis Alexandria Thompson was born on 19 Apr 1881 in Lancaster, Coos, New Hampshire, USA; died on 3 Jun 1955 in Bronxville, Westchester, New York, USA; was buried in Lancaster, Coos, New Hampshire, USA.