Costello syndrome is an exceedingly rare genetics syndrome first reported in 1977 by Dr. Jack Costello,a geneticist in New Zealand. With an estimated 300 people in the world, the incidence is 1:24 million, or fewer than 10 babies born with the syndrome per year worldwide. Researchers have recently identified Costello syndrome associated with mutations on the HRAS gene. for more information please visit http://costellokids.com

He may but it's more likely that he has Costello Syndrome, a very rare condition that affects the genes and it causes deformed hands, short stature, and deformity of the face, which fits him very well. It looks like he may have Costello Syndrome instead of Down Syndrome but I could be wrong

Helene Costello's birth name is Costello, Helen.

Rich Costello's birth name is Costello, Richard.

Shaun Costello's birth name is Shaun Costello.