Harry's communication's secretary Jason Knauf said Windsor was a "very special place" for Harry, and that he and Ms Markle had spent time there together during their 16-month romance.
The royal family usually exchanges gifts on Christmas Eve, and on Christmas Day attends a church service, has lunch and sometimes takes a walk in the woods, according to The Associated Press.
Ms Markle, 36, who attended a Catholic school as a child but identifies as a Protestant, will be baptised and confirmed into the Church of England before the wedding.
GETTYMeghan will reportedly spend Christmas with the royal family at Sandringham
He said the couple were delighted to be holding the wedding in the "beautiful grounds of Windsor".
One gossip website said this "bending" of the rules was done in a bid to "please" Prince Harry because Queen Elizabeth II "might favour Meghan over Kate simply because she's seen evidence of her strong work ethic".
He said normal protocol was to wait until they know more about what was going on then go back to companies with available dates and prices, then it was a "first come, first served" basis.
Polícia Federal sugere arquivamento de investigação sobre ministros do Supremo
A Polícia Federal concluiu que não há indícios de envolvimento de ministros do Supremo em crimes delatados por Joesley Batista e Ricardo Saud.
On Wednesday, Kensington Palace announced Markle would join the queen and other senior Windsors for their family Christmas celebrations at her Sandringham estate in eastern England in what commentators said was a break with royal protocol under which such an invitation would normally only be extended to Markle after the wedding.
There will also be a walkabout by the bride and groom-to-be - a royal rite of passage for the future royal.
"His Royal Highness Prince Henry of Wales and Ms. Meghan Markle will marry on 19th May 2018", the statement read.
China, South Korea: Thawing Frosty Feelings, Not Melting Them
Anti-South Korean sentiment has also battered firms' sales of entertainment, cosmetics and cars in China. Entertainment, will also join Moon and Song at a bilateral business event earlier on Thursday.
The actress will not be continuing her work on gender with the United Nations or with other organisations, but instead will be starting her charity work as a full-time royal afresh.
The Daily Telegraph, meanwhile, suggests the Duke of Cambridge might find the date "particularly problematic", but that the Saturday wedding allows them to avoid the contentious issue of whether the Government should declare a bank holiday. It will also be a ideal time for Markle to bond with Prince George and Princess Charlotte.
St George's Chapel is a Royal Peculiar, with the Dean of Windsor responsible only to the sovereign.
(NYSE:LII) and Alaska Air Group, Inc. (NYSE:ALK)
Looking at some alternate time periods, the 12 month price index is 0.78329, the 24 month is 0.87288, and the 36 month is 1.25742. Noam Gottesman increased its stake in Synaptics Inc (SYNA) by 52.13% based on its latest 2017Q2 regulatory filing with the SEC.
The palace confirmed the Queen will be a guest at Harry's wedding.