Following Wallace Breen's death, Mr. Somerville was appointed leading administrator of City 18 (the neighboring city of City 17). His past history and relationship with the Combine is uncertain or why he got appointed this position.
Somerville's eldest daughter Jessica resided in City 17 for a short time and he lived with his youngest daughter Maisie in the citadel. Jessica later took Maisie and fled due to her father's harsh ways.
Somerville was dropped from his position as leader of City 18 and was succeeded by the much nicer Jack Clayton.