Errand boy, he only reached the age of 16. Belonged to the 14 Roermonders murdered during Christmas 1944, who were shot just across the German border, in order to expel their male townmates between the ages of 16 and 60.
On the night of Christmas Day 1944, paratroopers, on the hints of Dieudonné Verstappen, a local resident who had just been arrested for theft, arrested ten men and boys who had been hiding under the floor of a classroom in the girls’ school on Schoolpad in Roermond. Also Mathieu’s father was in hiding there, when his son was arrested, but was able to flee at the last moment. Sevenich’s youthful age of 16 was no reason for a summary court-martial headed by Major Ulrich Matthaeas on December 26, 1944, not to sentence him and Jan Tobben, who was the same age, to death along with 11 others. On the same day, the two boys and the ten others were executed in the Elmpt forest near the German border village of Elmpt . Hubert Selder and a Polish man in hiding were shot a day later in the same forest area. Mathieu Sevenich’s name is inscribed on a plaque on the facade of the St. Alphonsus School and on the monument at the Tussen de Bergen cemetery in Roermond. 
He was also buried there, in the Catholic part of the cemetery, grave G20. 
His name is also on the war memorial in Roermond. 
Detailed information on this website: The Tears of Roermond and on a now inactive website, fortunately archived by the Way-Back-Machine, also titled: The Tears of Roermond.