Complex sentence: Sargents is named after the Sargent brothers who came from Maryland in the 1790s, they worked to start a station for liberated slaves in Ohio, later part of the underground Railroad.
Split into simpler sentences: Sargents is named after the Sargent brothers who came from Maryland in the 1790s. They worked to start a station for liberated slaves in Ohio, which later became later part of the underground Railroad.