Long is also used as a feminine given name in Chinese and Vietnamese. Some evidence for this is that Long is also used as a name element in unisex and feminine Chinese and Vietnamese given names, such as Xiaolong. However, Long is more common for males. So, I think that the "Gender" of this name should be changed from "Masculine" to "Masculine & Feminine". A known fictional female bearer of this name is Jinafire Long, a character in the "Monster High" franchise by Mattel Inc.Sources: https://monsterhigh.fandom.com/wiki/Jinafire_Long https://forebears.io/forenames/long