Silver tetradrachm of king Vonones mentioning his nephew Spalagadames, son of his brother Spalahores. Obv: King on horseback, holding a spear. Greek legend: BASILEOS BASILEON MEGALOY ONONIU "Great King of Kings Vonones". Rev:Zeus holding a thunderbolt and a sceptre with Kharoshthi legend: spalahoraputrasa dhramiasa / spalagadamasa ""Of Spalagadames, the son of Spalahores, the follower of the Dharma".
Coin of Spalahores, mentioning his son Spalagadames. Obv: Greek legend: ϹΠΑΛΥΡΙΟϹ ΔΙΚΑΙΟΥ ΑΔΕΛΦΟΥ ΤΟΥ ΒΑϹΙΛΕωϹ, "King Spalirises, the Just Brother", with the king on horseback. Rev:Kharoshthi legend: Spalahoraputrasa dhramiasa Spalagadamasa, "Spalagadames of the Dharma, son of Spalahores", with naked Herakles sitting on a rock.
Spalagadames was an Indo-Scythian ruler, son of Spalahores, himself brother of king Vonones. He ruled in areas of the North-western South Asia between around 50 BCE.
Spalagadames was mentioned on coins in the name of king Vonones, as the son of Spalahores, and later on coin of Spalirises as king, where he is again introduced as the son of Spalahores.
No coins of him as king are known, so he must have been a subordinate local ruler, such as a satrap.
^An Inscribed Silver Buddhist Reliquary of the Time of King Kharaosta and Prince Indravarman, Richard Salomon, Journal of the American Oriental Society, Vol. 116, No. 3 (Jul. - Sep., 1996), pp. 442 
^A Kharosthī Reliquary Inscription of the Time of the Apraca Prince Visnuvarma, by Richard Salomon, South Asian Studies 11 1995, Pages 27-32, Published online: 09 Aug 2010