Does Zimmerman Have More in Common with American Blacks than Obama?

Reuters reports now about Zimmerman,

“He was raised in a racially integrated household and himself has black roots through an Afro-Peruvian great-grandfather – the father of the maternal grandmother who helped raise him.”

Is it possible that this great grandfather was the descendant of  African slaves in South America?  If so, then it's ironic, but George Zimmerman shares more heritage with American blacks than Barack Obama!

Obama's father was a Kenyan national, from East Africa, but American slaves were from West Africa.  No slavery in Obama's roots.  But Zimmerman might just have black African slaves in his heritage!