Wunper,
The "Spirit" was the name of the S-76 (which started out as the S-74, but gained 2 "points" when the bicentennial of 1976 was being celebrated.)
Spirit was chosen in a contest among Sikorsky employees. The winner was Adoph Plenefishe, who was a worker on the VS-300 and the R-4. Talk about a pioneer, Dolf was the fellow who drove the parts car with the white bull's eye on the roof that the first delivery R-4 followed on its trip from Bridgeport Ct to Dayton, Ohio in 1943.
The Spirit name lasted about a year, but was dropped because the name was copywrighted by Spirit Helicopters in San Francisco,and Spirit wanted $500,000 to license the name to Sikorsky. Gerry Tobias refused to pay that much, so he had us drop the name. The ghost "spirit" story was used to avoid embarassment about not doing a careful enough name search, I believe.