sentences:  Elizabeth I holds the records for the shortest tenure of an English heir presumptive (almost 2 years as heir-presumptive to Henry VIII) unless one recognizes the 13-day tenure attributed to Lady Jane Grey's sister, The Lady Herbert of Cardiff.This would also be the record for shortest total tenure as heir-presumptive (Elizabeth was later heiress-presumptive to her sister Mary).The shortest total tenure as a male heir-presumptive was George I (54 days).