Charles, Earl Spencer, once said Prince Harry would always be the Spencer’s “blood family,” and that could be on dramatic display this Christmas. “Charles [Spencer] has invited Harry, Meghan and the children to Althorp this Christmas,” a reported Spencer family source shared. “It’s far too early to say whether they will take him up on it, but the offer is there if they want it.” Each year since their last royal Christmas in 2018, Harry and Meghan have reportedly received an invite to stay at Sandringham House in Norfolk, where the royal family spend the festive season. However, the 2022 and 20…