Are there two Alexander Anguses in London at the same time

An Alexander Angus married a Mary Cook in Southwark in 1758. They had a son called
Charles Jamesbaptised in Southwark later in 1758. No more children in Southwark. There is a burial for a Mary Angus in Southwark on 2 April 1760 no age mentioned.
Then your Alexander married Mary Clarke (as a bachelor) later that same month. As marriage was by licence, maybe the vicar didn't enquire to much as to whether he was a bachelor or a widower. Images of both marriage records are on Ancestry, some similarities in signatures, but not sure.
I can only find one burial for an Alexander - yours in 1793
Corrected
son was James