Trial-born was a rank within Chiss families of the Chiss Ascendancy, situated between ranking distant and merit adoptive. Although Chiss could be granted the rank of Trial-born based on merits alone, most reached the position by completing a series of tests known as the Trials. The Mitth family conducted its Trials in their homestead on Csilla.
The rank of Trial-born was considered much more secure within a Chiss family than the lower, probationary rank of merit adoptive. On rare occasions, a family may offer a highly desired individual to join their family at or above the rank of Trial-born, without even having to conduct the Trials.
Following the skirmish above Solitair, the Defense Hierarchy Council demoted Mitth'raw'nuru from Senior Commander to Mid Commander. However, due to the influence of Thrawn's Mitth family Patriarch Mitth'oor'akiord "Thooraki" and Supreme General Ba'kif, Thrawn was made a Trial-born of the Mitth and given command of the heavy cruiser Springhawk.
- Star Wars: Timelines