I have a question, if you can answer it if not... what month was your grandfather born? That would say a lot.
We all bring transgenerational things, it can be from one of our parents, grandparents and it's nice to know that to know from whom we bring things and how we combine them with our own.
In my case I bring from both my parents, a lot to improve and heal and I have done a great process to improve my self. But we learn from it all and that's the beauty of it.
Your grandfather had a great influence, it is very noticeable and that you think about him is very good, they are life processes.
He was born in late February 1902, so he and I were the same star sign. I don't know what that means, but we were much alike he and I.
I don't go by the sign but by a line of months, if he was born at the end of the month and you were born the following month and very close it means they were doubles.
Which implies that you have inherited characteristics and burdens from that person, they can be good things or not, things to be solved, but they are very similar... even I saw it in the photograph.