"Funny" Curiosity about Prince(interracial marriage laws)

i was googling his ethnicity after Big Smoke mentioned him to me, thats what I found:
According to Geni:
Prince’s great grandfather “Edward Nelson, was the son of a wealthy white slave owner and a freed Cherokee Slave. Denounced by his half-brothers for his marriage to a black woman, Nelson left Louisiana and traveled throughout Arkansas and Louisiana as a minister for the Colored Methodist Episcopal Church.” https://www.geni.com/family-tree/ind...00007748317716
Prince’s great grandfather Sam Bonnell on the census https://familysearch.org/ark:/61903/1:1:MD6Y-TS4

" Genealogist Megan Smolenyak Smolenyak, writing for The Huffington Post, traced Prince’s roots on both sides of his family. Among her findings are that all of Prince’s grandparents were born in Louisiana, six of his eight great-grandparents were born into slavery"

He is a Louisiana creole, it explains his light skinned colour for an Afram