Royals Joy for Queen Elizabeth as Great-Grandchildren Baptized on Special Weekend The Queen, 95, hopes to be at the christenings of babies August and Lucas on Sunday By Simon Perry Simon Perry Simon Perry is a writer and correspondent at PEOPLE. He has more than 25 years’ experience at PEOPLE covering the royals, human interest and celebrity. People Editorial Guidelines Published on November 20, 2021 08:46AM EST Queen Elizabeth. Photo: Max Mumby/Indigo/Getty Queen Elizabeth is celebrating with her family on a special weekend. That's because two of her great-grandchildren are being baptized at Windsor on Sunday. Princess Eugenie and Jack Brooksbank and Zara and Mike Tindall have organized for the christenings of their sons, August and Lucas, respectively, to take place at a poignant time as Queen Elizabeth is marking her first wedding anniversary since the death of her beloved husband Prince Philip today. There's added symbolism in that both boys are partly named after Philip — it is a middle name for each of them. Queen Elizabeth Seen for First Time Since Canceling Remembrance Day Appearance Due to Back Sprain The couples will be joined by their parents — including Prince Andrew and Sarah Ferguson for Eugenie and Princess Anne for Zara — and cousin Prince William and his wife Kate Middleton, The Sun, which broke the news of the occasion, said on Saturday. Prince Philip and Queen Elizabeth. Fox Photos/Getty The service is set to take place at All Saints Chapel, in Windsor Great Park and a regular place of worship for the Queen. It's also where Eugenie's sister Princess Beatrice got married last year. Can't get enough of PEOPLE's Royals coverage? Sign up for our free Royals newsletter to get the latest updates on Kate Middleton, Meghan Markle, and more! Fresh holy water brought from the River Jordan by Prince Charles following his tour there last week will likely be used in the ceremony. Queen Elizabeth and Prince Philip. Indigo/Getty Philip and the Queen married 74 years ago on Nov. 20, 1947, at Westminster Abbey. A royal source says she is privately celebrating their anniversary on Saturday following his death on Apr. 9 at age 99. Buckingham Palace declined to comment when contacted by PEOPLE.