Thank you for responding and willing to help.
I really don't have any more information about my uncle since he didn't keep in contact with his mother or sisters.
The last time they saw him was probably in the late 60's. When he lived in the Bronx near a theater name Puerto Rico or San Juan where singers and band from Puerto Rico played.
I did find a Roberto Colon that passed away in Florida in 1994 and was married to a Gladys.
Not sure if is him. When I visit Florida in February, I will try to get a death certificate.

Thanks!
Millie