To be precise the three whiterun guards, i started a new character you see and went towards Riverwood shorty after they left the gates of whiterun, en route i encountered one of them dead in a random encounter spot(near the small waterfall) and when i arrived in Riverwood there were only 2 of them there lol, so i'm wondering do these guys re-spawn? to those who had a dragon attack Riverwood and a guard died do they ever respawn?

Cheers!