There will be an official renaming ceremony at some point, after Covid-19 has subsided. The nameplates will be left off until then.
It's a sobering thought that this loco has been out of service for longer (80 years – 1940-2020) than it had run up to the date it was withdrawn for overhaul by the 'Old Company' (73 years – 1867-1940). Alan Garraway, the first General Manager of the revived FR had always wanted to get it back into service as he'd been told that it was a much more useful loco than Prince (a 'Small England' of 1863) by several retired 'Old Company' employees, but events always conspired to prevent him starting the rebuild.
You may also be interested to learn that your 'small cash donation' (I assume via one of the appeal envelopes that are distributed on the trains) was matched by a sufficient number of other donations from this source to the extent that half of the £260,000 cost of the rebuild was financed in this way.