Thanks Mr Grubby I thought I was going to get stuck with this one.
Below is the "great old man" cutting the cake and some links to him.
I was priveliged to be there.
H M Probyn_P
The reference to the flight from near Kilimanjaro to Nairobi on his 90th is pure BS. He flew the Jodel in the morning and spent the afternoon and early evening at the Aberdare Country Club for the celebrations. Baden-Powell was also a resident of Nyeri. It is also the location of The Outspan Hotel which is home to "Treetops" where the Queen first learned of her father's death.
daddy probyn 90th birthday - Google Search
Edición del jueves, 10 diciembre 1981, pgina 1 - Hemeroteca - Lavanguardia.es
aero club | take-off run | standard class | 1982 | 0012 | Flight Archive