Maybe a summary of the spread of inhumations in Sweden is helpful (google translation) as a comparison to the Wielbark culture:
René Bräunig
Die Anfänge der Körpergrabsitte bei den Germanen und ihre Verbreitung im Ostseeraum während der älteren römischen Kaiserzeit
The body burial custom appeared in Scandinavia at the same time in Gotland, Öland, Jutland, the Danish islands and in Norway and somewhat later in Scania, Östergötland, Västergötland, the Lake Mälaren region and in Finland. All of them show individual characteristics very early on. The supra-regional similarities that appear between the various types of body graves are explained by the beginning of maritime trade in the Baltic Sea, without any trade goods being recognizable. Family and religious ties offer an alternative explanatory model of equal value.
Gotland and Öland
In Gotland, the practice of body burial has occurred since the 1st century AD, with the material from these graves being similar to that from the cremation graves. The graves are oriented north-south, with the head in the north. Exceptions to this are extremely rare. The dead person usually rested in a stone chamber or was buried in a stone box with a stone pavement at the bottom. Wooden installations are revealed by the size of the findings.
Large numbers of body graves are known from Öland. These have appeared in the old burial grounds on Öland since the 1st century AD. The furnishings of these graves are very poor, and material that can be more precisely dated is rare. Some graves richly furnished with weapons date from the 2nd century AD. The grave constructions mostly consist of flat stone boxes, some with a stone floor.
The Swedish mainland
Body graves from the early Roman imperial period come from Östergotland, Västergötland and the Mälar region. These include the graves of Barkarby, Brillinge and Tärby.
Vastergotland
In Västergötland, inhumations are known from the 2nd century AD, sometimes containing Roman imports.
Östergotland
The body graves of Östergotland are poor in grave goods. However, weapons (swords) appear quite regularly in the body graves. The associated burial grounds are occupied throughout the Iron Age, a contrast to the burial grounds of Västergotland.
The sites include the places Lilla Berga, Kungshögarna, Svembs Östergard, Bergs Norr- and Källgard and Alvastra. Below this, the burial ground of Alvastra is highlighted by its number of graves. The burial ground begins in the pre-Roman Iron Age with cremation burials, which continue throughout the entire period of occupation. From the beginning of the imperial period, body graves also appeared in large numbers. The north-south orientation of the dead, who rest in a stone box, is dominant.
René Bräunig
Die Anfänge der Körpergrabsitte bei den Germanen und ihre Verbreitung im Ostseeraum während der älteren römischen Kaiserzeit
The body burial custom appeared in Scandinavia at the same time in Gotland, Öland, Jutland, the Danish islands and in Norway and somewhat later in Scania, Östergötland, Västergötland, the Lake Mälaren region and in Finland. All of them show individual characteristics very early on. The supra-regional similarities that appear between the various types of body graves are explained by the beginning of maritime trade in the Baltic Sea, without any trade goods being recognizable. Family and religious ties offer an alternative explanatory model of equal value.
Gotland and Öland
In Gotland, the practice of body burial has occurred since the 1st century AD, with the material from these graves being similar to that from the cremation graves. The graves are oriented north-south, with the head in the north. Exceptions to this are extremely rare. The dead person usually rested in a stone chamber or was buried in a stone box with a stone pavement at the bottom. Wooden installations are revealed by the size of the findings.
Large numbers of body graves are known from Öland. These have appeared in the old burial grounds on Öland since the 1st century AD. The furnishings of these graves are very poor, and material that can be more precisely dated is rare. Some graves richly furnished with weapons date from the 2nd century AD. The grave constructions mostly consist of flat stone boxes, some with a stone floor.
The Swedish mainland
Body graves from the early Roman imperial period come from Östergotland, Västergötland and the Mälar region. These include the graves of Barkarby, Brillinge and Tärby.
Vastergotland
In Västergötland, inhumations are known from the 2nd century AD, sometimes containing Roman imports.
Östergotland
The body graves of Östergotland are poor in grave goods. However, weapons (swords) appear quite regularly in the body graves. The associated burial grounds are occupied throughout the Iron Age, a contrast to the burial grounds of Västergotland.
The sites include the places Lilla Berga, Kungshögarna, Svembs Östergard, Bergs Norr- and Källgard and Alvastra. Below this, the burial ground of Alvastra is highlighted by its number of graves. The burial ground begins in the pre-Roman Iron Age with cremation burials, which continue throughout the entire period of occupation. From the beginning of the imperial period, body graves also appeared in large numbers. The north-south orientation of the dead, who rest in a stone box, is dominant.