Luxury empire heiress Paris Hilton and grouchy US-banned Brit Lily Allen may be related. P.H will attend the Flatlake Literary Festival in County Monaghan later this month (25-26Aug07) – an event organised by Allen’s uncle Kevin – to search her family tree. “We believe Paris wants to come to the festival which is at my in-laws’ place at Hilton Park, to check out her Irish ancestry. “They may be related.”