The name Austine is of Latin origin and means "great" or "magnificent." It is a variant spelling of the name Augustine, which was derived from the Latin word "augustus," meaning "great" or "venerable." The name Augustine was popularized by Saint Augustine of Hippo, a Christian theologian and philosopher who lived in the 4th century. Austine has been used as a given name since the Middle Ages, but it is not as commonly used as Augustine. It is considered a unisex name, although it is more often used for girls.
"Austine experienced notable fluctuations in popularity over the decades. Peak years included 1924 and 1984 with 8 births each, while 1918, 1922, and numerous other years saw just 5 Austines born annually."