The family of Duke Solha, a human, included his brother and sister. Solha and his siblings were born on the [planet](/article/planet] Serenno, located in the Outer Rim Territories.
In 19 BBY, the Serennian family, having previously served the Galactic Republic, operated a droid factory on the Outer Rim world Mokivj for the Separatist Alliance and their military. This factory was subsequently destroyed by Jedi Knight Anakin Skywalker, Republic [Senator](/article/senator] Padmé Amidala (his wife), and Chiss Senior Captain Mitth'raw'nuruodo. Amidala considered the family to be quite ambitious, a sentiment she shared with Skywalker. The Jedi then relayed his wife's assessment to Thrawn during their discussion about the family.
The Star Wars: Thrawn trilogy's second book, Thrawn: Alliances, a 2018 novel penned by Timothy Zahn, featured the family.