Newlyweds Kourtney Kardashian and Travis Barker are about to take part in a fairy-tale follow-up wedding. The couple’s third ceremony sounds like it will be the grandest of them all, at least when it comes to the backdrop, TMZ reported Friday. The “Keeping Up with the Kardashians” star, 43, and the 46-year-old Blink-182 drummer — who got engaged in October and have twice said “I do” since — are renting out Castello Brown, a hilltop castle in Portofino, Italy, for intimate wedding festivities spanning four days this weekend, according to the outlet. Among the attendees on the bride’s side will …