I'm 99% certain Arantzazu is female.
According to a dataset of 137, the average Arantzazu is around 63 years old.
From the name of a place near the Spanish town of Oñati where there is a sanctuary dedicated to the Virgin Mary. Its name is derived from Basque arantza "thornbush".
We use a combination of data from the internet, and our own Machine Learning models to make these predictions.
In a gist, we use a Machine Learning model trained on a diverse global dataset of 100m+ names, and use it to predict different traits for a person based on first name!
NameGuessr guesses a person's nationality, age, and gender based on their name. We also try to give insightful info around the name's origin, name meaning, and name pronounciation.