ASHEN - White Ashen Feather 14 Location
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The 14th White Ashen Feather (+2 max stamina) is located in the Shattered Ramparts area of the Featherlands. Here's the direct path to it from the Palace of Lathyrus Ritual Stone.
This video is a part of the ASHEN - Weapon, Armor, Shield & Feather Locations playlist: https://www.youtube.com/playlist?list=PLsxfoGQwyeP42HmRSxCgVw5PASYMMbJxQ