Starlike light moving erratically, north and south, back and forth, but moving at different speeds toward the west, overall.

Myself (male, 50s), my son (male, 30s), and two grandsons (15 and 11) were in the back yard, looking up at the sky for the Perseid meteor shower (which wasn't very active). My 15 year old grandson noticed the "star" moving erratically, first. After a minute or so, we all saw what he had seen.
I was laying in my zero gravity chair, facing the east, but looking straight up. The "star" was directly above us... maybe just a little east of zenith. The "star" was definitely not a satellite, as I have seen many of those before, and understand their movements. What we were seeing was what looked like a star, but it was moving (not at a steady speed) toward the west. It appeared to stop quite often, but not for long. It would also move from side to side (north and south), while still moving in a westerly direction. Sometimes slowly, and other times a little faster. After watching for about 45 minutes, I had to move my head backwards to the point where it became uncomfortable.
All of the other stars in the sky were still in their same general position, but the one we were watching had moved considerably. I also have a tree in my back yard that I could use as a landmark. After about an hour, the "star" had moved about 10 degrees toward the west. We did not watch it until it was no longer able to be seen, since it was late. It could have been lit up by itself or it could have been reflecting sunlight. There was no change in the intensity of the brightness, though.