I've started been working on the Brazilian 2010 census name data again a few months ago after leaving it aside for a long time. One of the #babynames that caught my attention as of late is Cauã, a derivation of the Old Tupi word 'kaûã' meaning "falcon."
https://en.wiktionary.org/wiki/ka%C3%BB%C3%A3#Old_Tupi

The name began to experience a more significant rise in the 1980s alongside its relative Cauê/Kauê. In that decade, over 800 boys were given the name Cauã or other variants, compared to over 100 in the 1970s and less than that in previous decades.

By the 1990s, the number of baby boys receiving this name + variants rose to over 7,600, a jump of 800%+ compared to 450%+ in the 80s. It wasn't until the 2000s that the name exploded in popularity, rising by well over 3,300% with the count of over 265,000 (all variants).

Cauã, plus 3 variants Kauan, Kauã and Cauan, that ranked within the top 100 (38th, 44th, 56th and 66th respectively) weren't even ranking inside the top 500 in the 90s. When combining all known variants together, depending on how they are classified, Cauã would rank in 11th/12th.

It seems to me that the crazy jump in popularity, or maybe at least the initial stages of it, is influenced by the actor Cauã Reymond, who made his television debut in 2002.
https://en.wikipedia.org/wiki/Cau%C3%A3_Reymond

To end this thread, here are the top 100 names given to babies in #Brazil from the 1930s to the 2000s, based on 2010 census data available at https://censo2010.ibge.gov.br/nomes/  (you must be connected to the BR internet or a VPN that can let you disguise your IP address as a BR one).