Jago Sev has no memories of his home planet. His earliest memories are Coruscant, training at the Temple. It had already been years since he saw his parents and he had been trained to not even try to remember them. It was a difficult life, from he can recall, but things did not get easier from there. Jago was taken as a Padawan by the Mon Calamari blademaster Mirx Kemdur. Master Kemdur took Jago to a backwater world in the Outer Rim, Sev's first trip off Coruscant since he arrived as a toddler. Master Kemdur was negotiating with a band of Weequay mercenaries, hoping to gain their service in the Clone Wars. That's when disaster struck. Knightfall, Order 66, the end of the Republic. Call it whatever you want, it was the day the galaxy changed. Master Kemdur did not intend to go down without a fight, but he knew the coming conflict was no place for a barely trained child, so he left Jago with the Weequay.
Life with a band of brutal mercenaries also wasn't really a place for a child, but the Weequay respected the Mon Calamari's wishes and raised Jago, teaching him to fight and survive. When Jago came of age, he left his adopted family to find his place in the galaxy.