Gustaf
Meaning
of uncertain root, possibly "staff of the Geats"; borne by six kings of Sweden
The story
Gustaf is Sweden distilled into a name: its root is uncertain, possibly staff of the Geats, the ancient people of the Swedish south, and six kings of Sweden have borne it. Gustav Vasa broke Sweden free of Danish rule in 1523 and built the modern Swedish state; a century later Gustavus Adolphus, the Lion of the North, marched the country into the front rank of European powers during the Thirty Years War; and today Carl XVI Gustaf, king since 1973, is the longest-reigning monarch in Swedish history. In American records Gustaf is genuinely rare, barely a trace across more than a century of data until a first small flicker in the most recent decade. That leaves it in an enviable position: every Swede knows it, almost no American child carries it, and Gus is sitting right there as a nickname. For true Scandinavian rarity, this is the real thing.
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Gustaf has stayed rare in US records the whole time: no peak decade to name.
See popularity in Brazil
Popularity in Brazil
22 people · the #116,443 first name in Brazil · median age 21
Source: IBGE, Censo Demográfico 2022
The Gustaf deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Gustaf truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Gustaf fits with your family’s names and surname.
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