Have flown past the Mt Yule cross several times but never knew it had a Jean Martin connection. Jean, I think was his real christian name. I also think he was of Swiss heritage. He married a Goilala lady and ran the tradestore in Tapini. Something tells me came to the area as a missionary originally. He was a founding owner of Elomair that started with a C206 and at its height had an Aztec, two C206s and the mighty C402. The other owner was a Dave ??? who was a ginger-beer by trade. Muttly from NCA was their Chief Pilot for many years.
Jean was a real pioneer. I remember he came to Port Moresby one day, bought a Suzuki compact 4WD (what were they called back then?- it had a noisy 360cc two stroke engine) cut it up into bits with a blowtorch and we transported it, bit by bit in the 206 to Tapini where he reassembled it.
Sadly, Jean was murdered in Erime (I think it was called- a strip/village just NW of Tapini that was seldom visited by aircraft). He was assasinated in his footsteps with bushknives. I had the dubious duty of taking cops from POM to investigate with the bloodstained evidence still fresh on the path covered by corrugated iron.