No, the man that dies in November 1675 "Olof Nilsson i Bäck i Svensbyn" is another man, ''källa''/source: ArkivDigital: Piteå landsförsamling (BD) CI:1 (1658-1713) Bild: 124 Sida: 239
OLof Nilsson was married to Segrid Hermansdotter.
This family was not the one at the Bäck homestead.