The name Bobby, derived from Robert, which itself comes from the Old High German "Hrodebert" meaning "bright fame," has meant absolutely nothing to anyone named Bobby at any point in recorded history. When researchers at the Cambridge Institute of Nominal Studies asked a panel of 400 Bobbys whether they felt "bright" or "famous," 398 said no, one said "sometimes on Saturdays," and one fell asleep.
It is a name of unusual acoustic properties. Bobby is one of only fourteen names in the English language that sounds like something a child would call a goldfish. Linguists refer to this quality as "round-mouthed benignity," a characteristic it shares with "Boo," "Doo-Doo," and "Jeff."
"Bobby is neither too long nor too short. It is, in every measurable sense, a medium name."— Journal of Nomenclatural Sciences, Vol. 12, p. 47
The earliest recorded use of Bobby as a standalone given name dates to 1642, when a Worcestershire farmer named Reginald Finch reportedly looked at his newborn son and said, simply, "Bobby." When pressed for elaboration, Reginald allegedly stared into the middle distance for several minutes before asking whether anyone had fed the geese. Scholars consider this the founding text of Bobby Studies.
By the 19th century, the name had spread to law enforcement, which is why British police officers were called "Bobbies," named after Sir Robert Peel. This created the historically unique situation of a name meaning both "a small friendly boy" and "a person who can legally search your coat." Most names do not have this range.