Re the Gypsy/Gipsy bit, by coincidence I was reading an old copy of Pilot last night (circa 1981!) and there was an article in it by Alan Bramson on the Tiger Moth - he mentions the first Gipsy Moth was powered by the Gypsy 1, then later talks about the Gipsy Major... Ah well... I'll go and make a nice cup of Gipsy Major Rosie Lee I think... The dictionary likes both versions anyway...
Confused of Purley...