Sudās was a king in the Rig Veda. His name means "worshipping well", an s-stem, either from a root dās, or with the extra s added to avoid an archaic root noun in ā, Sudā-, which would easily be mistaken for a feminine name.

He is a descendant of Divodasa

Divodasa

Divodāsa is a name of a tribal king in the Rigveda , the son of Vadhryashva RV 6.61.5. He is the father of the famous Sudas .It is also the name of a king of Kashi surnamed Dhanvantari as per the hymn...

. Divodasa is a descendant of Srnjaya, who in turn is a descendant of Devavata. He was the victor in the famous Battle of the Ten Kings

Battle of the Ten Kings

Battle of the Ten Kings is a battle alluded to in Mandala 7 of the Rigveda , the ancient Indian sacred collection of Vedic Sanskrit hymns. It is a battle between Aryans...

, which established the ascendency of the Bhar

Bharatas

Bhāratas are an Aryan tribe mentioned in the Rigveda, especially in Mandala 3 attributed to the Bharata sage Vishvamitra. In the "river hymn" RV 3.33, the entire Bharata tribe is described as crossing a river. Bharatá is also used as a name of Agni Bhāratas are an Aryan tribe mentioned in the...

 clan.

Sudas can differently mean "one who gives beautiful gifts/ bountiful/ giver of great gifts". su (good, beautiful as in sundar)+ da: (h)(giver)(people of "madra" emphasized on the end ':h' so Sudah: was spoken as Sudas).

Further reading

• Frawley, David
  David Frawley
  David Frawley is an American Hindu author, publishing on topics such as Hinduism, Yoga and Ayurveda. He is the founder and director of the American Institute for Vedic Studies in Santa Fe, New Mexico, which offers courses on Yoga philosophy, Ayurveda, and Hindu astrology...
  
  : The Rig Veda and the History of India, 2001.(Aditya Prakashan), ISBN 81-7742-039-9