where does the last name darby come from

The last name Darby has origins in England and Ireland. 

In England, Darby is derived from the Old Norse name “Darrbi,” which means “deer settlement” or “deer farm.” It was likely used as a topographic surname to describe someone who lived near a deer park or farm.

In Ireland, Darby is an anglicized form of the Gaelic surname “Ó Dorchaidhe,” meaning “descendant of Dorchaidhe.” “Dorchaidhe” is derived from “dorcha,” meaning “dark” or “gloomy.” 

Overall, the surname Darby can have multiple origins and variations depending on the region and specific family history.