Zac and the Reluctant Prince Book 1 of the Prince David series

At the age of six Zachary Bolitho discovers that his very kind small town neighbors are actually the Monarch's grandson and family. By the age of seven Zachary has lost his father met the Queen and become an assistant caregiver to his little brother Austin and Austin's same-age best friend David who just happens to be a royal prince. When a national tragedy strikes seven years later Zachary finds himself in a role he is hardly prepared for placating senior government officials while trying to protect young David. Going purely on guesswork and instinct Zachary tries hard to do what he thinks is right while at the same time working to assist a much younger David to do the same. Dealing with cranky older advisors a lack of clear direction plus a traitorous and Machiavellian uncle Zachary struggles to make sense of what has happened while trying to prepare his young friend for the most important role of his life.