Ego is a stubborn force. Rather than concede to a more informed source, you resort to a ridiculous wiki article - but even that makes my point for me. There is no racial or even ethnic identity conveyed by the word Hispanic - it refers broadly to people of Iberian descent throughout the former Spanish empire, and also includes the full-blooded indiginous Indian tribes of South America, some of whom speak Spanish now, as well as full blooded Africans descended from the slaves brought to the former Spanish empire.
For the third time: therefore, calling someone Hispanic is utterly meaningless as a racial or ethnic designation, because it could mean any of the above, and/or any of the above in combination with Iberians.
From looking at the photo of the child, I draw the conclusion that the father has mixed blood, with at least one mulato grandparent.
Have you looked at the father —
What does he look like???
And the name “Santiago” — what does that sound like??