It's unlikely that "Sadducee" is derived from the Hebrew or are they related to the priestly lineage of Zadok and Aaron. And it is doubtful that either the Sadducees themselves or others would have chosen "righteousness" as their distinctive trait since they were unpopular with the masses and in conflict most of the time with the Pharisees. Zadok's line served as priests until the Babylon Captivity, but was restored afterwards in the person of Joshua the son of Jehozadok (Hag. 1:1; 520 B.C.). His line continued to serve as priests until it ended abruptly when Antiochus IV deposed of Zadokite Onias III and installed Menelaus from the tribe of Benjamin as high priest from 171 B.C. to 161 B.C. Sadducees came into being around the time of Johathan, the brother of Judas Maccabeus (160-143 B.C.). They predominated in the Sanhedrin and the political and religious affairs of Jerusalem under the Herods and Romans. Herod II, an Edomite, ruled Jerusalem 37-4 B.C., he appointed puppet high priests in place of the Hasmonean high priests with whom the Sadducees had been associated with, which reduced their influence, as did the decline in the power of the Sanhedrin. The Sanhedrin, mostly controlled by the Sadducees, regained power when Judea became a Roman province in A.D. 6. Until the fall of Jerusalem in A.D. 70 the Sadducees remained in the majority in the Sanhedrin, and the high priests were Sadducees. Sadducees were aristocrats who derived their power from their class and collaborated with the Roman occupiers to gain domination over others. They were discribed as "heartless" or "savage," characterized by crudity, coarseness, loudness, quarrelsome, vugarity, and violence. They denied the resurrection of the body and rejected belief in angels and spirits and emphasized the freedom of the human will over the doctrine of election. They were preoccupied with power and materialism. Pharisees derived their power from learning and knowledge of the Scriptures. They were depicted as refined, urbane, harmonious, and affectionate, amiable and believe in the resurrection of the body. (Similar to Zola Levitt) For most of their history, Pharisees defined themselves in opposition to the Sadducees. Josephus says that, even when in power, the Sadducees were compelled for fear of the people to concur with the Pharisees on religious matters. These two groups who made up the Sanhedrin were mostly in conflict with each other, they had a different temperament, reputation and essence just like their fathers Esau and Jacob. The Sadducees exhibted characteristics common to Esau and the Pharisees were like Jacob. Sadducees were Edomites and the Pharisees were their brothers. In January 2005 a Sanhedrin was launched in Tiberias in preparation for the third temple. Of the members, who are Jacob and who are Esau? Hard telling until you get to know them, the same identity problem we all struggle with today.