What evidence that Unknown of the Balari's, born in Sardinia, was the father of Isaac of Orkneys who married Cecilia Erlendsdatter
Cawley doesn't have it: http://fmg.ac/Projects/MedLands/SCOTTISH%20NOBILITY.htm#_Toc268450047
Cutting relationship due to a user objecting to this as baseless.
PTID:6000000177936088869:6000000108704228037 it would be really great if you did have Primary Sources for this.