There are a lot of annoying things about the new animated series, Star Trek: Lower Decks, but the Mary Sue antagonist character actually has a normal sort of name. I know they’re chasing the trend of giving women a “masculine” name, but the origin of the surname baptismal name thing (back in Early Modern times) was unisex. So who cares?
More to the point, “Beckett” is of course the last name of St. Thomas Becket, archbishop of Canterbury and martyr. So even if Ensign Beckett Mariner is annoying and her overall name not euphonious together, her first name is good. And her nameday is December 29.
(Her family probably calls her Becky.)
This particular form of Becket was from Norman French, and meant either “little beak” (bec + -et) or “little stream, beck” (beck + -et). There’s also an English origin surname that means “bee cottage” (beo + kett).