During the "T" era, the South Acton station was moved from east of the RT 27 bridge to west of the bridge, as it is today. Remnants of the earlier station can be found: a repurposed express building, sections of platforms and stairs leading down to the station from the bridge. Just prior to the reconstruction of the existing station, there was some talk of using the old site for the temporary station. Stairs and a small platform were constructed but I don't believed this site was used. The temporary station was eventually built west of the current station.
People have named abandoned stations that predated the T located on existing MBTA lines. On the Franklin branch add Winslows (in Norwood), West Walpole, Highland Lake (Norfolk) and City Mills (Norfolk). There was a station in Unionville (Franklin) just east of the current Forge Park station.
On the Franklin Branch I'm not sure if Franklin Jct. was ever a stop (some members may confirm), but there was a sizable interlocking tower and freighthouse there. This was where the current Forge Park line leaves the Midland Division main line that went to Blackstone and beyond. Also, there was a branch from there to Valley Falls, RI which was abandoned in the early 1940's.
The route of the Foxboro commuter train pilot and event trains to Gillette (the Framingham Secondary), add Cedar Jct. (Walpole), South Walpole, Foxboro and Foxvale.