The name Becky is a diminutive form of the English given name Rebecca, which has its origins in the Hebrew name Rivkah. Rivkah is derived from the Hebrew word "ribqah," which means "to tie" or "to bind." The name Rebecca first appeared in the Bible, where it referred to the wife of Isaac and the mother of Jacob and Esau.

The name Becky emerged as a shortened version of Rebecca in the Middle Ages, likely as a result of the popularity of the name Rebecca among Christians. One of the earliest recorded instances of the name Becky dates back to the 16th century, when it appeared in the form "Beckye" in English parish records.

Throughout history, there have been several notable individuals who bore the name Becky. One of the earliest recorded was Becky Ferriday (1630-1690), an English Quaker preacher and activist who was arrested and imprisoned for her religious beliefs. Another notable Becky was Becky Battle (1773-1855), an American pioneer and frontierswoman who settled in what is now West Virginia.

In the 19th century, Becky was the name of a character in the novel "Vanity Fair" by William Makepeace Thackeray, published in 1847-1848. The character, Becky Sharp, was a cunning and ambitious social climber, and her portrayal helped to popularize the name in the English-speaking world.

Another famous Becky was Becky Thatcher, the fictional love interest of Tom Sawyer in the novels of Mark Twain, published in the late 19th century. This literary character further cemented the name's association with youthful charm and innocence.

In the 20th century, one of the most famous individuals named Becky was Becky Edelman (1911-1988), an American tennis player who won multiple Grand Slam singles and doubles titles in the 1930s and 1940s. She was inducted into the International Tennis Hall of Fame in 1971.