The name Angelyn is a feminine given name of English origin, derived from the combination of the Old English word "engel" meaning "angel" and the French suffix "-yn" or "-ine." The name likely emerged during the Middle Ages, around the 12th or 13th century, when the blending of French and Old English words became more common due to the Norman Conquest of England in 1066.

One of the earliest recorded uses of the name Angelyn can be found in the Domesday Book, a great survey of England completed in 1086 by order of William the Conqueror. The name appears in various spellings, such as "Angelina" and "Angilina," suggesting its roots and popularity during that era.

The name Angelyn has religious connotations, as it is closely associated with the concept of angels in Christianity. In the Bible, angels are depicted as celestial beings who serve as messengers of God and protectors of the faithful. This association likely contributed to the name's popularity among Christian families in medieval times.

Throughout history, there have been several notable individuals bearing the name Angelyn. One such figure was Angelyn Tyndall (c. 1521-1586), an English Protestant martyr who was burned at the stake during the Marian persecutions for her religious beliefs. Another was Angelyn Bullen (c. 1475-1542), an English courtier and the sister of Anne Boleyn, the second wife of King Henry VIII.

In the realm of literature, Angelyn Radcliffe (1764-1823) was a British novelist and playwright known for her Gothic romance novels, including "The Castles of Athlin and Dunbayne." Angelyn Radcliffe's works influenced later Gothic writers and helped shape the genre.

In the arts, Angelyn Terhune (1856-1942) was an American painter and illustrator who gained recognition for her portraits and genre scenes depicting life in rural America. Her works were exhibited at the Paris Salon and other prestigious venues.

Lastly, Angelyn Mercer (1908-1990) was an American actress and singer who appeared in several Broadway musicals and Hollywood films during the 1930s and 1940s. She is perhaps best known for her roles in the films "Knute Rockne, All American" and "The Killers."