Robert April

Robert April was a 23rd century Federation Starfleet officer, perhaps most famous for his stint as the first captain of the USS Enterprise (NCC-1701). He was born in 2195, and married Sarah.

During the 2240s, April oversaw the construction of Constitution class components at the San Francisco Naval Yards. The USS Enterprise became his first command. April captained the Enterprise from 2245 to 2250; his wife Sarah served as chief medical officer.

Following the end of his five-year mission, Commodore April became a respected ambassador-at-large for the next twenty years, until Starfleet forced him to retire in 2270. Exceptional circumstances made Starfleet reconsider its retirement policies, however, and he continued to work for the service.

In Star Trek: Arcadia continuity, Robert and Sarah (born Sarah Poole) April had several generations of descendants, among them Stephen April in the 24th century. The existence of a mirror-Stephen April indicates that Robert and Sarah April probably also existed in the mirror universe.

Background
The name Robert April originates from Gene Roddenberry's original Star Trek series pitch, as the name of the lead character ("Robert M. April").
 * Unused material for Jonathan Archer's bio in "In a Mirror, Darkly, Part II" (ENT) stated that Archer passed away one day following the christening of the USS Enterprise in 2245. This may indicate that April and Archer knew each other.

From Memory Alpha -- the free Star Trek reference