A friend of mine was gong to name her daughter Ayla but changed her mind at the last minute and named her Aria instead. My tutor at uni was Ayla and she was beautiful and smart so I have positive associations with the name - she was Turkish. I do actually love Sage as well. Isla and Ayla and very similar in sound, so it depends how close these cousins will be. I don't think it's a deal breaker though if you absolutely love them name.