Laban
Laban is a man mentioned in the First Book of Nephi as keeper of the brass plates in Jerusalem about 600 B.C., a record that has on it the book of Moses and many prophetic writings.
The sons of Lehi are sent to get the plates from him. They draw lots and Laman, the eldest son, is sent. Laban repels him with threats. Then all the brother's go and try to bargain teh plates with all their wealth. Laban takes their wealth with out giving the plates. He then orders the sons of Lehi slain by his servants. They flee.
Later on, Nephi comes to the city of Jerusalem at night. He finds Laban stone cold drunk and is commanded to kill him and get the plates. The Lord tell Nephi that he is justified because the lord had commanded him and it would be better that one man perish then whole nation dwindle in unbelief.
Nephi slays him and takes on his armor and sword and poses as him to Laban's servant Zoram. Zoram believe he is Laban and reveals that Laban was intertwined with the elders of jerusalem.
Later on, when Nephi returns with the brass plates it is revealed that Laban and Lehi are related distantly, but close enough that it startles Lehi.
Though Laban's actual position in Jewish society remains unknown it is revealed that he has fifty men under his command.