could he be Black Jersey Giant?

[Cadjien_De_Louisiane]

 

[Ladybird CA]

I think he might be a Jersey giant but perhaps a mix too because of the brown in his wing.

 

[NYREDS]

A real Balck Giant would not have that colour on it's wing. Beyond that the type is all wrong for a Giant. What you have is a cross breed [mutt].