By the way the "Hispano" part comes from the fact that the company was created and based originally in Barcelona, Spain. And it was as you said a Swiss engineer who put the engines in aeroplanes until WW2 ( The V12 inside the Dewoitine 520 )
From 1919 onwards, the emblem of Hispano Suiza automobiles ( a swiss cross with wings ) will also have a stork on the radiator in memory of Georges Guynemer.
The name Hispano Suiza still exists today inside the french group "Safran" (before known as SNECMA) and has been working among other things on power transmission and thrust reversers for the Rolls Royce engines fitted on several Airbus (A320, A330, A380, A400M) and also for Eurocopter for the whole transmission on the EC175 (developped in cooperation with China).