New Testament name, borne by one of Christ's twelve apostles, referred to as ‘Thomas, called Didymus’ (John 11:16; 20:24). Didymos is the Greek word for ‘twin’, and the name is the Greek form of an Aramaic byname meaning ‘twin’. The given name has always been popular throughout Christendom, in part because St Thomas's doubts have made him seem a very human character.
German (Russmann): 1. from Ru(o)ss, a derivative of the personal name Rudolf + Middle High German man ‘man’. 2. nickname for someone who had traveled to Russia or had some connection with that country (see Russ 2). 3. (Rüssmann): perhaps a habitational name for someone from any of several places named Rüssen in Lower Saxony and Saxony.