Isidor Rayner was a Democratic member of the United States Senate, representing the State of Maryland from 1905 to 1912. He also represented the Fourth Congressional District of Maryland from 1887 to 1889, and 1891 to 1895.
Rayner was born into a GermanJewish family in Baltimore, Maryland, and attended local private schools. He later attended the University of Maryland, Baltimore, and the University of Virginia. He began to study law and was admitted to the Maryland bar in 1871.
Source: Wikipedia