"He dedicated the majority of all his time and everything to her", Thomas Markle Jr. told the Daily Mail of his dad's relationship with the "Suits" star.
By common consent, Harry dropped a "clanger" when he was a guest editor on BBC Radio 4's Today programme earlier this week and said: "No look, she's done an absolutely awesome job".
Prince Harry and his glamorous fiancee Meghan Markle stepped out with the rest of the royal family for their traditional Christmas morning church service, before spending the rest of the day with the Queen and the family for lunch.
Responding to Harry's remarks, the 51-year-old said his actress sister was from a close knit family who would always "get together" on special occasions.
"She's done an absolutely fantastic job, she's getting there and it's the family that, I suppose, she's never had". Grant took to Twitter to fire back about the Prince's comments that his family, is the family Markle "never had'". Markle also has a half-brother, Thomas Markle Grant Jr.
A London woman named Louisa Pawsey has started an online petition in an attempt to block American actress Meghan Markle from marrying Prince Harry.
It's been claimed that Meghan's dad, Thomas Markle, is less than impressed with comments Prince Harry made when he guest hosted a BBC Radio 4 show this week.
Gunmen open fire outside Egypt church, kill 10, injure 8
Police inspect the site of an attack on a church in the Helwan district south of Cairo , Egypt December 29, 2017. The attack comes days before the Coptic celebration of the new year and orthodox Christmas Day on January 7.
Markle's 52-year-old half-sister says she's writing a tell-all book about the actress and her fractured family. It was always somewhere, even though we lived in different parts of the city [Los Angeles] - we still all got together.
"Our household was very normal and when dad and Doria divorced, we all made it so it was like she had two houses". She got everything she ever wanted.
The PM sent the newly engaged couple a Christmas card wishing them the best for the holiday season.
Meghan Markle's sister Samantha has also lashed out at Harry.
"No one was estranged, she was just too busy".
"Obviously, she had a family".