At age seven, he reportedly told his mother he wanted to be a police officer when he was older so that he might be able to protect her; a statement to which his five-year-old brother Harry reportedly replied, "Oh, no you can't.
Pada usia tujuh tahun, William dilaporkan mengatakan kepada ibunya bahwa ia ingin menjadi seorang polisi ketika ia lebih tua sehingga ia mungkin bisa melindunginya; pernyataan yang saudaranya Menjawab: "Oh, tidak bisa.