Ok, here's my dilema: In my Kievan Rus campaign I married my faction heir, Vladimir (who has 'Of Kievan Rus blood' trait), to a Genoese princess, Fiora the Affectionate (which, of course, has 'Of Genoese blood' trait).
The problem is that their offspring, Andrei, only has the trait 'Of Kievan Rus blood' and instead of 'Of Genoese blood' trait he has 'Genoese relations' trait, which has no effect.
And here is why I find it odd that Andrei doesn't also have 'Of Genoese blood' trait: meet Kirill, a novgorodian family member (he is a badass, as you can see from his traits

) seduced by Eupraxia (she was a royal princess of mine with 'Of Kievan Rus blood' trait) and brought into my family. Their son, Izyaslav, has both 'Of Kievan Rus blood' and 'Of Novgorodian blood' traits. WHY ? Judging by Andrei's case, Izyaslav should have gotten only 'Novgorodian relations' (or whatever); or he should have only 'Of Novgorodian blood' trait and 'Kievan Rus relations' . My logic is good, right ?