They shall be called Castiel San-Saj (Cas) and Seraphim San - Saj(Raf).
Castiel means Shield of God or God is my cover. It's been a while since I wanted to give a child this name.
Seraphims are angels that are closest to the throne of God. (Isaiah 6) Sanju chose this name.
We had decided long back that these would be the names of our children, irrespective of their gender identities.
Incidentally, Isaiah 6 was the Bible reading in all CSI churches in the Diocese the weekend they were born. Isaiah 6 is the only chapter in the Bible with a reference to Seraphims. What a cool coincidence!
Their surname is derived from our first names - Sanju , Sajithra. It was sort of a coin toss on what combination works well. We don't do role playing in our family life and this nomenclature felt natural. They are boys, making it all the more important to teach them that a person's birth identity doesn't limit or determine their options in life. And that starts with their most basic identity, their names.
When we saw our babies for the first time, we instantly knew what to call them. Seraphim cannot lay still unless he is swaddled. Well, not even then - He turns a complete circle like an arm on an imaginary clock. Castiel is grounded and has very few complaints in life.
This is Castiel