The name Herbert is a boy's name of German origin meaning "bright army". Herbert and is often added to lists like Old People Names and discussed in our forums with posts like "Boy and girl makeover with middles".
From the experts:
Names ending in bert have long been in limbo, but with the return of Albert, maybe there's hope for Herbert. who could share the Bertie nickname. Herbert is a name that's been used by English speakers since medieval times, and was in the Top 25 in the US in the late 1920s, around the time of the presidency of Herbert Hoover, but there's been no sight of Herbert in the 21st century. Some Herberts, including novelists H. G. Wells and H. E. Bates, have preferred to go by their initials.