Like in Icelandic, where you have three recognized terms to use as a modifier to a surname.
(parents name)-son, to denote male
(parents name)-dottir, to denote female
(parents name)-bur, to denote non-gender.
Since you can use the mothers or fathers first name was the first part of one's surname, you can have an Einar Thorason or Sigríður Thoradottir or a Regn Thorabur. (First names in Icelandic are officially gender neutral as well).
I mean, that's why languages coin or crib new terms. Where there's a need, language will grow to meet it.
Like in Icelandic, where you have three recognized terms to use as a modifier to a surname.
(parents name)-son, to denote male
(parents name)-dottir, to denote female
(parents name)-bur, to denote non-gender.
Since you can use the mothers or fathers first name was the first part of one's surname, you can have an Einar Thorason or Sigríður Thoradottir or a Regn Thorabur. (First names in Icelandic are officially gender neutral as well).