The masculine features makes me wonder if it is a former shieldmaiden, and the younger perhaps also a shieldmaiden who was wounded but beginning to heal, but it is speculated by wiser people than me that the elder is Ása Haraldsdóttir mother of Hálfdán Svarte in Ynglingasaga. She was also magnificant, the story goes that she took revenge upon her husband for killing her father via her servant, thus making it clear it was not a male-specific right to seek your bloodrevenge. Apparantly she was great-grandmother to Harald Fairhair or Harald Lopi (lopi is a name for wool prepared before making it to a string and looks like a very curly beard after bath, eg it is a taunt to his pledge to not cut hair or beard until he had united Norway).

Disturbance of “old” mounds was not totally unknown in the viking age. Some did this to invalidate the political “power” behind a known entity of old and thus vigorate the “new order”.