Was yuthishtra the first son of kunti?

Yes, Yudhishthira was the first son of Kunti. He was born as a result of Kunti invoking the god Dharma (Yama) through a boon given to her by Sage Durvasa. Yudhishthira is the eldest of the Pandavas in the Indian epic Mahabharata and is known for his righteousness and adherence to truth.