Peter M. Neumann liked to spell his name with a Π (the Greek letter Pi). He preferred to call himself a plain Mr. and not Dr. He was a proud recipient of the OBE in 2008 for his contributions to Mathematics. I had started writing this piece on the 16th Dec. 2020 while trying to order by thoughts to send him a birthday greeting for his 80th birthday on the 28th December; but his death on the 18th Dec. from Covid has forced me to turn it into an obit, my homage to the man who I considered to be my father, in the years after the death of my real father.
I am a Luit-pariya Asamiya living on the banks of the river Main in Germany. Both a mathematician and an anthropologist by training, I am currently studying the Moran-Motak people as well as the Tangsa (Naga) community living in Upper Assam and in Changlang in Arunachal, north-east India respectively. Will be happy to get in touch with others who share this interest.