"FYI: With the most recent update to the game, starting from today, it’s no longer possible to insert a custom family name for your Crown. You can only choose from among the fixed range of suggestions given to you.
I decided I wanted to make the Crown's ethnicity as explicitly, canonically, Kurdish as possible regardless of the first name inserted by the player, so using a fixed range of Kurdish last names was the easiest way to do that. Each suggested last name is taken from a renowned Kurdish poet 💖"
This is from the Tumblr :)