The name Austin has its origins in the Late Latin name Augustinus, which was derived from the Roman name Augustus. The name Augustus was first adopted by the Roman emperor Gaius Octavianus, who was given the title Augustus by the Roman Senate in 27 BC. The name Augustus comes from the Latin word "augustus" meaning "venerable" or "consecrated".

The name Augustinus was first popularized by St. Augustine of Hippo, a philosopher and theologian who lived from 354 to 430 AD. He is considered one of the most influential figures in the development of Western Christianity and his writings had a significant impact on the philosophical and religious thought of the Middle Ages.

The name Austin is an English variant of the name Augustinus, which emerged during the Middle Ages. It was commonly used by the Augustinian religious order, which was founded in the 11th century and named after St. Augustine. The name became popular in England and other parts of Europe during the medieval period.

One of the earliest recorded examples of the name Austin can be found in the Domesday Book, a record of landholders in England compiled in 1086 by order of William the Conqueror. The name appears as "Austinus" in this ancient document.

Throughout history, there have been several notable individuals who have borne the name Austin. Here are five examples:

1. St. Augustine of Hippo (354-430 AD) - The renowned philosopher, theologian, and author whose writings had a profound influence on the development of Western Christianity.

2. Austin Friars (13th century) - An order of mendicant friars founded in the 13th century, known for their austere way of life and dedication to poverty and preaching.

3. Austin de Bordeu (c. 1518-1590) - A French jurist and philosopher who wrote extensively on legal and political theory.

4. Austin the Poet (c. 1637-1674) - An English poet and playwright who was part of the literary circle surrounding Samuel Pepys.

5. Austin Phelps (1820-1890) - An American Congregational minister and educator who served as the president of Andover Theological Seminary and authored several influential works on homiletics and theology.