Elijah April was a son of Admiral Robert April in a vision of a future life together shown by Marie Batel to Christopher Pike.
In the vision, he was a Starfleet sciences division cadet and the boyfriend of Pike and Batel's daughter, Juliet. He asked her parents for permission to marry her. (SNW: "New Life and New Civilizations")
Elijah was played by Eric Miracle.
It is unclear whether Elijah exists only in the vision, or if he is also a real son of April.
Elijah's mother is not mentioned in the vision, so it is not certain whether he is also a son of Robert's wife, Sarah April.