The new variety for my grandfather

Few months ago my grandfather died, he was born and grow up in not really rich family so he was always plant some veggie for my dad and his brother to save some money, because of this also my dad give to me the passion for the garden and plants;

So for commemorate him to try to make a new variety of plant to give to that his name to gift to my dad, I choose the tomato because it was one of his favourite plant and also because I found online documentation only of this one.

So I ask if anybody have suggestion, video or anything that can help me to this project or can explain me some experience that anyone can have it, thanks!