Yeah, I think they retained the name from when they owned Rover (of course all the major British brands were part of British Leyland before it was all disintergrated into just Rover), I know Rover (as in the Phoenix consortium) took the Austin name when they broke away from BMW and the chinese SAIC/Nanjing who bought MG Rover's assets are considering reviving that brand too.
BMW also owned the Rover brand, but when they sold Rover, they sold MG to Rover, but retained the rights to the Rover name, and then leased it back to Rover, and the reason Rover no longer exists, is because Ford had an agreement in place as a result of the Land Rover Sale
from BMW to them, that should Rover ever be disbanded, Ford would have first refusal on purchasing the rights to the Rover brand.
If any of that makes sense, ye will see how they own it now lol. Well thats how I assume
they own it anyway haha...