On Wednesday, the couple announced the July 9 date for the christening. Louis’ godparents will be announced that day.
Prince Harry, 33, is not a godparent to either of his brother’s two older children — 4-year-old Prince George and 3-year-old Princess Charlotte. It’s thought that William and Kate wanted to honor some of their closest friends,rather than choosing someone who was already a proud uncle for the two royals.
Jessica Bridge, of British bookmakers Ladbrokes, said in a statement, “As with George and Charlotte, [William and Kate] chose close and trusted friends and aides, rather than immediate family members, and the odds suggest that will be the same with little Prince Louis.”
According to Ladbrokes, the favorites include William and Harry’s former assistant and nanny Tiggy Pettifer (née Legge-Bourke) and William’s outgoing private secretary Miguel Head. Head is William’s most trusted employee, which was evident in the warm comments he made when Head announced he was leaving the palace. Pettifer listed as 2/1 and Head is at 5/4.
Next up is William’s stepsister Laura Lopes, at 3/1. She’s the daughter of Camilla, Duchess of Cornwall, and the mother of one of the royal couple’s bridesmaids — Eliza.
Next is Rebecca Priestley, at 4/1. She is Kate’s former private secretary, who led her office through the first six years of William and Kate’s marriage.
David Jardine-Patterson, at 5/1, is the husband of Emilia, who is a godmother to Prince George, while Hugh van Cutsem, also at 5/1, is one of four brothers who are close to William and Harry. William van Cutsem — Hugh’s younger brother — is a godfather to George.
Also in the running: Princess Diana‘s sisters Lady Jane Fellowes (who did a reading at Harry and Meghan’s wedding) and Lady Sarah McCorquodale are at 6/1, while Kate’s siblings Pippa and James Middleton are both 10/1 chances.
The bookies put Princesses Beatrice and Eugenie at 7/1 odds, and royal nanny Maria Turrion Borrallo a long shot at 16/1 odds.
This article originally appeared on PEOPLE.