Guess it is possible that Homer was female. I personally doubt it.
Possibly he/she was a hermaphrodite. LOL
Butler's position (and perhaps Graves', dunno) was the the Odyssey and the Iliad had different authors, and that the (very much older) Iliad was written (or rather, composed) by a blind poet, while the Odyssey was written during Classical times by a woman living in, hmm, Lipari or something. Sappho is another example of a woman who left written work; and there were dozens of sequels to the Iliad besides the Odyssey, and most of them have not survived except as quotations in other works which have (the Aeneid survived, and is broadly speaking a sequel to the Iliad). Even in ancient times the authorship of the many sequels were attributed to Homer, but that wasn't taken too seriously.