The given name Rock has its origins rooted in the Old English word "rocc," which was derived from the Old Norse word "rokkr." This word referred to a rock or stone, and its usage as a name likely symbolized strength, stability, and steadfastness. The name has been in use since the 9th century, primarily in England and other Germanic regions.

One of the earliest recorded instances of the name Rock can be traced back to the Domesday Book of 1086, which was a comprehensive survey of landowners and property holders in England commissioned by William the Conqueror. The name appears in various spellings, such as Rocco, Roc, and Rocke, indicating its widespread use during that time period.

In religious texts, the name Rock is sometimes associated with the biblical reference to Peter, whose name means "rock" in Greek (Petros). This allusion was made to signify Peter as the foundation upon which Christ would build his church, as mentioned in the Gospel of Matthew.

Throughout history, several notable figures have borne the name Rock. One of the earliest was Rock of Cambrai (c. 790 - 856), a Benedictine monk and the first abbot of the Abbey of St. Vaast in Arras, France. Another was Rock of Remiremont (c. 1020 - 1094), a Benedictine abbot and bishop of Toul in present-day France.

During the Middle Ages, Rock was a relatively common name, particularly among the nobility and landed gentry. For instance, Rock de Lacy (c. 1170 - 1238) was a prominent Anglo-Norman baron and constable of Chester in England. Another example is Rock Millington (c. 1275 - 1350), an English landowner and Member of Parliament for Nottinghamshire.

In more recent times, the name Rock has been associated with various individuals from different walks of life. One notable example is Rock Hudson (1925 - 1985), an American actor who became a leading man in Hollywood during the 1950s and 1960s, starring in numerous romantic comedies and dramas.

Another prominent figure bearing the name is Rock Demers (1932 - 2021), a Canadian former ice hockey player and coach. He played for the Montreal Canadiens and won six Stanley Cup championships as a player and coach.