As someone with an "Alpine mind," a tree- and forest-lover, I still get memory glimpses of those promenades in the woods, feeling the coolness of that very environment with that old indefatigable walker, that nature man and his daughter. As for the age difference suggested by the picture itself, yes, he was very much the age of a grandfather.
The title given to this art makes me think of a quote I like:
'The ultimate bond between the very Young and the Old is the lack of pretense: The Young have yet to learn the rules of the Game of Life; the Old no longer feel obligated to abide by them. "
Nurture the thought and enjoy the memories or the dreams that may come your way should you choose to get this beautiful picture.