mardon
4 occurrences across the corpus
Sefer haYashar (Book of Jasher)
And he made gods of wood and stone, and he bowed down to them, and he rebelled against the Lord, and taught all his subjects and the people of the earth his wicked ways; and Mardon his son was more wicked than his father.
And every one that heard of the acts of Mardon the son of Nimrod would say, concerning him, From the wicked goeth forth wickedness; therefore it became a proverb in the whole earth, saying, From the wicked goeth forth wickedness, and it was current in the words of men from that time to this.
And notwithstanding this, Nimrod did not return to the Lord, and he continued in wickedness and teaching wickedness to the sons of men; and Mardon, his son, was worse than his father, and continued to add to the abominations of his father.
And all those kings fought there, and Nimrod and his people were smitten before the people of Chedorlaomer, and there fell from Nimrod's men about six hundred thousand, and Mardon the king's son fell amongst them.