Jack may have fallen from its Number 1 place in England, but in the US it's as popular as it was at its height in the 1920s and 1930s. A durable, cheery, everyman form of John, Jack ranks as one of the most popular boy names starting with J.

Matthew was the third most popular boys' name in America throughout the 1980s and '90s, and is still one of the top boy names starting with M. The New Testament Matthew is the epitome of the fashionable classic—safe and sturdy, yet with a more engaging personality than John or William.

Michael was the Number 1 American boys' name for almost half a century. While Michael has moved out of the Top 10 baby boy names, it's still widely used.

Joseph is one of the most classic names in American nomenclature, popular with parents from many ethnic backgrounds and having dual-religious appeal.

The origins of the name Brian are not entirely clear, but it is suspected that it evolved from an Old Celtic word related to nobility. In Ireland the name is associated with Brian Boru, the most famous of all Irish warrior-kings, credited with driving the Vikings out of Ireland around the year 1000.

An alternate spelling of Brian, Bryan's one of the most enduring of Irish imports. Bryan is now slightly more popular than the original, with associations to Bryan Cranston, Bryan Ferry and Bryan Brown.