Your Gertrude has a beautiful bloom, and I think we have one here, but aren't sure...
Mrs Growster was always given roses by mums when their children moved on to junior school from kindergarten, so we have all our roses called Charlotte or William for some reason!
I want to move our Gertrude as it's been in a pot for ages, and really needs a new position! Will a place near a low wall, but North-facing be OK? It's a very sunny spot, but sheltered from the South.