Rudra and Sukeerthi are the names of the wives of Sri Garuda.Garuda is the son of Vinatha .That is the reason He is called Vinatheyan.Garuda is the mount of Sri Mahavishnu .Garuda is inimical to the snakes is a known factor.In Kalia mardhana episode in Bhagavatham this inimical attitude results in the huge serpent Kaliya seeking shelter in Yamuna .The story goes like this,One Maharishi Saubhari was unhappy when He saw Garuda picking up a fish from the waters of Yamuna where He was doing austerities aHe became agitated in His mind and  gave a curse that should Garuda again visits that place He will lose His life .As Garuda avoided that place Kaliya relocated himself with his wives and progeny in that place.But as he emitted poison the place become dangerous for cows and calves and the cowherds .One all became unconscious  after drinking the waters of Yamuna in that place.Sri Krishna brought them back to life .He drove away Kaliya by dancing on his hood .Kaliya could not bear the dancing feet of Lord Sri Krishna.Begged for his life and left the Yamuna crevice for his original place of stay Ramanakam [Srimad Narayaneeyam [56/57dasakas].Garuda and Aruna are born to Vinatha wife of Kashyapa Prajapathy.His another wife is Kadhru who gave birth to the serpants 1000 in number.Aruna has no legs as He was prematurely born .He is the charioteer for Sun Deity.Among the 1000 Nagas eight are prominent.Their names are:Karkodagan[Nala Charithram]Sankan,Padman[associated with Nava nidhis]Dhkshakan[Parikshit of Bhagavatham]Sowchuki,Adhiseshan,Kuligan and Sambukan.