Born to bridge players Rita and William Seamon, Michael was the youngest of three children. His sister, Janice Seamon-Molson, is also a nationally ranked bridge player. On September 3, 1992, his son Kevin William Seamon was born.
Seamon died suddenly in 2017 of natural causes.[citation needed]
^"Blue Ribbon Winners"(PDF). American Contract Bridge League. 2013-12-03. p. 5. Archived from the original(PDF) on 2014-10-21. Retrieved 2014-10-17.
^ ab"GNT Previous Winners"(PDF). American Contract Bridge League. 2009-07-24. p. 8. Archived from the original(PDF) on 2014-10-21. Retrieved 2014-10-17.