Brock Purdy was once labeled "Mr. Irrelevant" in the NFL 'cause of his lowly draft status -- but now, he's a married man ... and his regular surname will do just fine for the missus.
The 49ers quarterback got hitched Saturday in Des Moines, IA -- saying "I do" to his longtime GF Jenna Brandt ... to whom he got engaged this past summer. They obviously didn't wanna wait long to get married ... 'cause this is them as the bride and groom!
Peep the pics .