Obituary – Dennis George Theriault

Dennis George Theriault

March 24, 1959 – November 4, 2019
Age: 60
Residence: West Plains, MO
Formerly of: New London, CT

Dennis George Theriault, age 60, passed away November 4, 2019, surrounded by family in West Plains, Missouri. Dennis was born in New London, Connecticut, to George and Nancy (Perkins) Theriault on March 24, 1959. His father has preceded him in death. He was joined in marriage to Leslie Harmon on February 1, 1997. Arrangements and cremation are under the direction of Cremations of the Ozarks.

During his lifetime, Dennis traveled all 48 continental U.S. states as a truck driver. His passion was collecting Lionel toy trains and participating in antique toy train shows, including playing an active role in Toy for Tots. Dennis loved karaoke, especially performing “Great Balls of Fire” by Jerry Lee Lewis. Other pastimes included going to flea markets and garage sales as well as collecting coins. Dennis’s greatest loves were his children and grandchildren, who he shared treasured memories. Although they will miss him greatly, they will carry his legacy to their own children.

Dennis is survived by his loving wife of 22 years, Leslie Theriault; his parents, Nancy and Paul Seibert of Sun City, Arizona; two sons: Brian Seibert of New London, Connecticut, and Michael (Becca) Seibert of Springfield, Missouri; a daughter, Stephanie (Timothy) Randall of West Plains, Missouri; and five grandchildren: Macy, Maddie, Selah, Soren, and Stella. He is also survived by three sisters-in-law: Christine Bradley of Flippin, Arkansas, Kathy Gent of Searsport, Maine, and Jennifer Klotzer of Woodstock, Georgia; two stepsisters: Christine Seibert of Providence, Rhode Island, and Corinne (Peter) Landeau of Rhode Island; a stepbrother, William Seibert of Groton, Connecticut; and  many nieces and nephews.

A memorial service will be held Tuesday the 12th of November at First Christian Church in West Plains, Missouri, with Eld Randall Evans officiating. To leave an online condolence, please visit


There are no guestbook entries at this time. Be the first to sign the guestbook below.

View all guest book entries (0 entries) Sign Guestbook Type your entry here. Name (optional):
Print Obituary: Share: Funeral Home InformationCremations of the Ozarks

130 Industrial Park, Suite E
Hollister, MO 65672
Phone: (417) 544-0218
Visit WebsiteService InformationLocation: First Christian Church
Date/Time: November 12, 2019
Presiding Official: Eld. Randall Evans
422 W Main St
West Plains, MO
Phone: (417) 256-2887