How very special, Kat. That is a gorgeous photo and a forever reminder for you.
For as long as I can remember my grandparents had 2 Boston Terriers during my lifetime that they were alive. Both were named Princess--Princess1 and Princess2. lol Anyway, I can't tell you how many times I have wished that my granddad could have known Lulu and Gidget and our Lacy. He would have loved them! I know how you feel; I don't know how to put it in words, but there's definitely something to wishing those granddads we love so much could have known those fur kids we love so much!