Martha went on to describe her grandfather as "the most loving, caring, sweet, romantic, funny, and (sometimes brutally) honest man," who "did everything for us."
"He taught us to live life to the fullest. I miss you already. Love you forever my beautiful papouli."
Michael also took to Instagram to pay tribute to the great-grandfather of their son, writing; "I'm so glad you got to meet Lucius, but more so that he got to be held by you."
"I can't wait to tell him about you, the kindheartherd person you were, your selflessness, your caring nature and your jokes. I'll tell him how much you loved your family, how dovted you were to ensuring everyone was happy and fed well!"
"I can only hop Lucius takes a part of you with him in life and grows up to have the same values as you did."
"I'll miss seeing you every Monday Papou, knowing how happy it made you to see the family together. I know you'll always be watching over everyone."
Speaking on the KICBUMP podcast, Martha revealed details of her experience with hyperemesis gravidarum (HG) which is a debilitating pregnancy sickness.
"HG, it's no laughing matter. When you're in the midst of it, you are so sick that you'd give anything to escape it. It's so hard to revisit those moments," Martha explained.
"I remember being so sick, thinking 'I will never forget this, this is the lowest point of my life'...This pregnancy, it was the lowest, it was dark, it was depressing."