https://www.royal.uk/update-communications-secretary-prince-harry-wedding-prince-harry-and-ms-markle
"Prince Harry and Ms. Markle are very much looking forward to welcoming Ms. Markle's parents to Windsor for the wedding. Mr. Thomas Markle and Ms. Doria Ragland will be arriving in the UK in the week of the wedding, allowing time for Prince Harry's family, including The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, and The Duke and Duchess of Cambridge, to spend time with them before the big day.
Both of the bride's parents will have important roles in the wedding. On the morning of the wedding, Ms. Ragland will travel with Ms. Markle by car to Windsor Castle. Mr. Markle will walk his daughter down the aisle of St George's Chapel. Ms. Markle is delighted to have her parents by her side on this important and happy occasion."
