Thank you very much for your response. I just read through your link and found that 6.1.10 states:
"Income from Category C can be combined with income from
Category A and Category B: salaried and non-
salaried employment, Category D: cash savings and Category E:
pension in order to meet the financial requirements."
I'm under the assumption that means that they can be combined. I have read through posts on here and have yet to find someone who has done this, however.
Thank you again. 
From the guidance:
6.1.2.
Unless otherwise specified, the specified non-employment income which the applicant’s
partner and/or the applicant have received in the 12 months prior to the date of
application can be counted towards the financial requirement.
6.1.3.
The relevant asset on which any income is based must be in the name of the applicant,
their partner or both jointly and held or owned at the date of application.
Yes they can be combined, but you mentioned SS was paid to your son? That would not count as it is not in your name or your sponsor's name.