I ran into such a strange family path.
These individuals may well be related, but where is the information and sources?
There is a line from Helena Torildsdotter, princess of Sweden mothers side to Olof Brörnsson:
Sigtorn? Prince Ingvar of Sweden?
N.N. Obobrit (who is this person, sources? profile made 2019)
N Obobrit (sources?)
his father → Olof Björnsson, Munsöätten