I don't think the name change should be too much of an issue at this stage. Silbaby may or may not be "The Great Bank", but until we know for sure - does it matter too much? At least it's brought attention to the poor blighter!
But it ain't a bank it's a mound. Surely if the locals had a name for it they'd have said mound or hill or tump or something. I wonder if the owner knows?