Count Carl Gustaf Ericsson von Rosen (19 August 1909 – 13 July 1977) was a Swedish pioneer aviator, humanitarian, and mercenary pilot. He flew relief missions in a number of conflicts as well as combat missions for Finland (whose first military aircraft his father had donated in 1918) and Biafra. His flights for the Biafran Air Force were notable for using the small Malmö MFI-9 in a ground attack role. Early life and family. Von Rosen was born in Helgesta, Flen Municipality, Södermanland, Sweden and grew up in Rockelstad Castle.
https://en.wikipedia.org/wiki/Carl_Gustaf_von_Rosen