사대명문

The Four Great Houses (四大名門(よんだいめいもん)) are 에레보니아's four most powerful noble families. Each House upholds the highest of noble traditions and influence over the Imperial provinces entrusted to them by the emperor.

Organisation

Bold indicates most recent official leader.

House Cayenne

• Alfred de Cayenne: The previous Duke Cayenne who died in maritime accident; his position was taken over by his younger brother Croire de Cayenne.
• 크로와르 드 카이엔: Former lord and leader of the Four Great Noble Houses who holds the title of Duke, he was also the ruler of the 라마르 주 before his arrest. He was revealed to be a descendant of the Arnor Family from the line of the removed Royal family member, 오르트로스 라이제 아르노르. Like his ancestor, he was removed from power after the 에레보니아 제국 내전's end.
  
• Mildine Juzelith de Cayenne: Daughter of the late Duke Alfred de Cayenne, she was confined to 성 아스트라이아 여학교 by her uncle Croire after her parents' death. With Croire's arrest and the backing of the other Great Houses, she was appointed as the heir apparent to House Cayenne. She leaves most official matters in the hands of her granduncle, Wilhelm Ballad, until she finishes her education at 토르즈 제II분교 and official assume her role as Duchess after she gratulated.

House Albarea

• 헬무트 알바레아: Lord of the 크로이첸 주 who holds the title of Duke. He was arrested by his second son for ordering the pillaging of 켈딕.
• 루퍼스 알바레아: The first-born son of the duke and a member of 토르즈 사관학교's board of directors. He is the primary leader of the 철혈, and was tasked to take out the 귀족 연합 from within.
• 유시스 알바레아: The duke's illegitimate second son and a student of 토르즈 사관학교's experimental VII반. Following the 에레보니아 제국 내전, he took up the role of Kreuzen's new lord after his father's arrest.
  

House Rogner

• 게르하르트 로그너: Lord of the 놀티아 주 who holds the title of Marquis.
• 하이델 로그너: The marquis's younger brother who temporarily held the position of the 라인폴트 그룹's director following the Noble Alliance's hostile takeover. Following the infiltration of the 라인폴트 그룹 building by VII반, he was removed from the position and arrested.
• 안젤리카 로그너: The marquis's rebellious daughter and a student of 토르즈 사관학교's Class I.
  

House Hyarms

• 페르난드 하이암즈: Lord of the 서덜랜트 주 who holds the title of Marquis.
• 패트릭 T. 하이암즈: The third-born son of Marquis Hyarms and a student of 토르즈 사관학교's Class I.
  

Gallery

• 
  The four great house's domains of Erebonia.
• 
  The capital cities of each Great House; 바레아하트, 올디스, 생트 아크 and 루르.