Meaning and history
C. S. Lewis used Caspian for the exiled rightful king of Narnia, first appearing in the Chronicles of Narnia in 1950. He probably took it from the Caspian Sea, whose name traces through the city of Qazvin to the ancient Cas tribe.
20062006: 17 births, rank #5,072
2007: 16 births, rank #5,434
2008: 33 births, rank #3,344
2009: 37 births, rank #3,105
2010: 36 births, rank #3,128
20112011: 39 births, rank #2,950
2012: 55 births, rank #2,326
2013: 84 births, rank #1,733
2014: 88 births, rank #1,714
2015: 105 births, rank #1,546
20162016: 158 births, rank #1,199
2017: 254 births, rank #860
2018: 284 births, rank #796
2019: 292 births, rank #790
2020: 316 births, rank #760
20212021: 372 births, rank #706
2022: 362 births, rank #723
2023: 409 births, rank #664
2024: 494 births, rank #576
20252025: 614 births, rank #491
Caspian rose from #577 to #491 for boys between 2024 and 2025. That year also produced its highest recorded birth count, at 614.