Social Security Survivor Benefits?

I am currently drawing Social Security Disability and my son also draws a check for me being disabled. My wife, and my son's mother passed away a few years ago from cancer. Are either of us eligible to draw Social Security Survivor benefits from her? She worked for many years and paid into Social Security, but never drew it herself.

I am 43 and my son is 15 years of age. I would draw a larger benefit than her so I'm not sure if I'm eligible, but would my minor son draw a survivor's benefit from his deceased mother and continue to draw from me as well since I am disabled?

By Charlie