That would be a tough one to answer. Protracted litigation would be involved. Possibly it could never be determined.
There has been some “speculation” that it could have been Frank Marshall Davis, although I see no evident to suggest that.
Referencing the 1961 HI BC example, there is no entry for the babies race, implying that any designation of race came from the parents.
If the father is listed as “UNKNOWN” then, the clerk/attending could not enter the father’s race. Only the mother’s race would be entered.
When he was enrolled in kindergarten and presented his BC, what would the child’s race be officially designated as?