No it is not the nose, but it really isnt important as I am the one who inherited said markings and not really of any interest to others, but it shows a direct genetic blood line to the same ancestors of a few related royals over many years.
Not being one of them but sharing the same ancestor as they have, Im sure they are not interested in me sharing their ancestors genes.
Most of us would like to know our ancestral background for different reasons. I was not looking for it but it was brought to my attention in the past few years. From there one thing led to another and the same ancestor genetic markers were discoverd as well some simiuler looks.
Good luck on your noble research and I will watch you progress as time goes on, and wish you well.