I'm a novice when it comes to some of this. I'm not sure what you mean when you say "make a native" connection. I'll certainly give you any information that I have that might be useful.
There were two SIMMS brothers that married two Parsons sisters. A third SIMMS (Archibald) married the third Parsons sister however I have never made a connection between the two brothers (John Simms was my great grandfather) and Archibald. I suspect that Archibald had the same last name but was not actually related or was a distant relative. Because of the same last name there seems to be some overlapping of which Simms were actually related. My father mentioned many SIMMS (Unlce Joe SIMMS from Cards Harbour, but I have not actually found a direct connection my my SIMMS family.
I'm still trying to find out who the parents of my great grandfather Johns Simms were.