He's just after you see this:
He's in the group of people in the upper right. Following a wagon. Just after this scene you see Adams coming through on a horse telling the men what is happening. He's dressed very similar to the guy in the lower right corner (at first I thought that was him).
It'll be a big night for us with Jr. making his HBO debut and us winning the HGTV Dream Home.
*snort*
Re the John Adams miniseries - it’s excellent. I love the portrayal Abigail.