The question makes an assuption that is not strictly true. Some may have such problems others will not.
FIRST BORN FIRST BORN
Cain and Abel were the first children in the bible, both were born to Adam and Eve.
when you were first born because you kept on waking up for food
It is unknown which of Poseidon's children were born first. The myths are not dated.
Shakespeare's children were Susanna, Judith, and Hamnet. When they were first born, they were infants.
The children don't laugh. It is the twitching of the facial muscles. It is also called witch's smile.
Peter Sleep was born in 1957.
It isn't known how old Noah was when his first children were born.
He didnt have children!
Their eyes are closed and they squeek and smell like babies and they sleep alot
The noun and adjective are one word, firstborn (first of children).
Colin Sleep was born on 1944-10-08.