If you want a French equivalent, you might consider names like:
* Valérie: Meaning "strong" or "healthy", it captures the meaning of "valiant".
* Raoul: Meaning "wolf counsel", it evokes a sense of strength and wisdom.
* Guillaume: Meaning "helmet of will", it suggests a determined and courageous spirit.
* Léon: Meaning "lion", it symbolizes courage and strength.
Ultimately, the best French equivalent for "Riley" depends on the specific connotations you want to convey.