All the names are female

[helsont]

Would be helpful to include this odd tidbit in the readme.

[dominictarr]

confirmed. weird i didn't notice that.
aha, the "middle names" are "male".
https://github.com/dominictarr/random-name/blob/master/middle-names.txt

[MatthewScholefield]

If you are getting the data from project gutenberg, NAMES-F.txt and NAMES-M.txt refer to female names and male names; not first names and middle names.