I'm 100% certain Arethusa is female.
According to a dataset of 13, the average Arethusa is around 47 years old.
From Greek Ἀρέθουσα (Arethousa) meaning "quick water", which is possibly derived from ἄρδω (ardo) meaning "water" and θοός (thoos) meaning "quick, nimble". This was the name of a nymph in Greek mythology who was transformed into a fountain.
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.