The Nisan family is an old Jedi family. They were one of the last families of the Jedi Order before reforms disallowed Jedi families and extreme detachment became part of Jedi doctrine. Sep Nisan was not a Jedi Guardian too long when Endy Kepo achieved Knighthood. They were assigned to work together on several missions. Eventually, the two fell in love, married and had a baby. Their daughter, Marianna, was strong in the Force. Sep and Endy both became Sentinels about the time Marianna was able to travel with them as their Padawan.
A bit of a rogue, Sep Nisan was still considered a candidate for the Nisan Clan Council. The Nisan Clan included both Force-sensitive and non-Force-sensitive members. There was harmony in the clan regardless of the issues of the galaxy after the Treaty of Coruscant. Sep often questioned actions of the Council as it, at times, conflicted with tenets of the Jedi Order. He could only do what was expected of him on his missions for the Order.
Order was always a part of Endyâ€™s life. Organization was second nature to her as she would conduct her life and role as a Jedi with precision and attention to detail. Few had reason to question her. Her reputation would precede her and many situations were easily resolved when many heard Endy Nisan was on her way.
Mac, as was Mariannaâ€™s nickname, grew to become a powerful Jedi. She was given many missions that earned her the respect of her parents, the Jedi Council, and even the Sith. On her early travels, she befriended a Twiâ€™lek smuggler by the name of Ostaâ€™zes. Mac wondered if Osta was Force-sensitive as well. Osta always was in the right place to help pull Mac out of many situations.
Decades after the attack on the Jedi Temple, the Sith still clashed with Jedi on various planets along the Republic/Imperial borders. Many of these were led by Sith warlords. Among them, Darth Shrotan was one of the most ruthless. Darth Shrotan became a nemesis of the Nisan family. He was responsible for attacks on the home planet of the Nisan clan, killing some notable Jedi. Mac took to ridding the galaxy of Darth Shrotan but was warned by her parents to tread carefully because they felt her quest would take her to the Dark Side.