Actually...if you enlarge the image as I just did, concentrating on what you term as a ‘widows peak’ you might find that what you see is possibly a clump of fuzzy hair hanging down his forehead.
http://markobamandesandjo.com/images/341_MarkDavid.jpg
The photo of 0 Sr and Ruth with the two boys also looks as though he has somewhat of a widow’s peak. Now that I am thinking about it, how many black people have widow’s peaks? I don’t recall seeing very many. One thing in the family photo with 2 boys - the dark boy really has similar facial structure to the person I mentioned to you earlier.