Rhaegar is of Andalusian origin, meaning "to dream". It gained popularity through the works of George R.R. Martin, particularly in his "A Song of Ice and Fire" series and its television adaptation, "Game of Thrones".
"The name Rhaegar saw a decline in popularity over the years with 12 babies born in 2018, dropping to 10 in 2019 and further down to 8 in 2020. After a gap of two years, there were only 5 babies named Rhaegar in 2022. In total, over these five years, there have been 35 births with the name Rhaegar."