Was Archie Manning the only Saint to get Player of the Year?

One other fairly similar honor that comes to my mind and not posted here yet is Rueben Mayes winning the Offensive Rookie of the Year (OROY) for 1986 from the AP. Same award George Rogers won in 1981.

I think Archie's honor is a bit lost to history because it was the UPI's version of the award. UPI is still around, but long story short, it has a much, much smaller footprint in the media world than it did in the mid-20th century when it competed with AP.

As the UPI voted for Archie in 1978, the AP went with Terry Bradshaw as the NFL MVP. Staubach finished down the line in both polls....

1978 AP MVP voting, as per Pro Football Reference