Gyles definitely comes across as more modern, but funnily enough, it actually isn't! The name was already around in the 16th century:https://dmnes.org/name/Giles (in English)It's actually even older, as is indicated by the existence of the patronymic surname Gyles, which was first recorded in the 12th century:https://www.surnamedb.com/Surname/Gyles (in English)So definitely very old, but without that clunkiness that a lot of equally old names seem to have. I guess you could perhaps say that Gyles is basically an old name masquerading as a modern name. ;)