Yancey is a new font based on a hand-lettered design by Samuel Welo in the late 1920s. It is very much in the tradition of Art Deco designs of that period and designed for decorative titles of poster design uses.
Yancey includes two versions of the character set, one with solid characters and the other with the characters presented as outlines. This approach works well with Yancey because it is such a heavy weight font.
As for the name, we usually try to explain them, but I have none for this font. We don’t have a lot of fonts that start with “Y” and the name just presented itself and seemed appropriate.