Portia Matthiesen Obituary

The passing of Portia Matthiesen of Mandan, North Dakota leaves a void in the hearts of many, as we bid farewell to a loving soul who departed on February 8, 2026 at the age of 21. You can send your sympathy in the guestbook provided and share it with the family.

She was predeceased by: her grandfather Robert Matthiesen. She is survived by: her parents, Troy Matthiesen (Laci) and Jessica Wright (Schlosser); her husband Seth Boyko; her siblings, Brodey Matthiesen of Mandan, Parker Matthiesen (Alonna) of Mandan, Paige Weiss of Mandan and Seth Boyko of Ruso, ND; her grandparents, LaVonne Jangula (Frank), Laurie Baker (Dan), Gloria Schlosser (Leland), Doreen Hutchins and Gary Wright (Kathy); her aunts and uncles, Todd Matthiesen (Marlys), Deedee Friesz (Jason), Dustin Baker (Brittany), Brad Fleck (Mandy), Ronda Assel (Korey), Troy Schlosser (Carrie), Dawn Brunelle (Patrick) and Leah Bender (Jeremy Engelhardt); and her great-grandparents, Jack Schlosser (Rose) of Mandan, Jacob Freidt (Eleanor) of Mandan, Elbie Matthiesen (Herb) of Mandan and Ted Gerhardt (Clara) of Mandan. She is also survived by aunts and uncles; and many cousins, extended family, and friends.

If you are considering honoring Portia in this way, rather please consider donations to Furry Friends Rockin Rescue, in memory of Portia and her love of animals.