Intermarriage... so should we expect Aragorn playing a banjo then?
On a more serious note, there is a distinction to be made between "pure Numenorean" and "elvish blood", and it would be possible to be the former without having a trace of the latter.
I really
must dig out my copy of LoTR, but didn't JRRT describe at least one of the Argonath as bearded in the book? That, for me, rests the case regarding any
possibility of beards.