For me, it would be my paternal Grandparents, My Grandmother Shaikha and Grandfather Mohammed.
My Grandfather passed away before I was born. I hardly remember my Grandmother as she passed away when I was a toddler. Even though I've never met them, I feel this strong longing, especially to my Grandmother. I'd do anything to meet them, or even exchange a few words of love and care for a few minutes...I wish.
اللهم أرحم من أشتاقت لهم أرواحنا وهم تحت التراب
P.S. Even though I've never met you, I love you beyond what words are capable of.