Percy Honri was my great grandfather, and I used to visit Mary and Robert frequently with my parents. It's been wonderful to be able to show them this - my mother who was a singer herself is now in a nursing home - and to my son, an accomplished musician, who got a proper concertina from my father as a 16th birthday present today.
So that interested concertina folks can find their way to this clip, the adorable Percy Honri is playing a large Maccann duet Concertina. He was one of the famous virtuosos on the instrument. A "duet" concertina is unisonoric (one button plays one note whether on the "push" or on the "pull"); Mary's Piano Accordion is also unisonoric). On a duet, lower-pitched notes are on the left, higher on the right, the idea roughly being to play melody on the right, bass accompaniment on the left!
Percy Honri was one of the earliest (maybe the 2nd?) people to record on a concertina/accordion. And he's so cute here! www.concertina.net/forums/index.php?showtopic=16266