| NAME | |
|---|---|
| Chinese Name | 司马恂, 司馬恂, Sīmǎ Xún |
| Other name | Tư Mã Thuẫn |
| Courtesy name | 京达, 京達, Jīngdá, Jing Da, tự Kinh Đạt |
| INFORMATION | |
| Death Reason | Natural causes (approximate; details unrecorded in SGZ core) |
| FAMILY | |
| Father | |
| Mother | |
| Relatives | |
| CAREER | |
| Allegiance | Eastern Han / Cao Wei |
| Battles | No major independent campaigns attested in SGZ core; brother of Sima Yi. |
Biography & Historical Record
Sima Xun (司马恂, Tư Mã Tuân) was a son of Sima Fang (司马防, Tư Mã Phòng) and a younger brother of Sima Yi (司马懿, Tư Mã Ý) in the celebrated roster of the Eight Sons of Sima Fang (司马八达). Seventh son; courtesy Jingda (京达).
Seventh son; courtesy Jingda (京达, Kinh Đạt). Chen Shou’s core Sanguozhi text foregrounds Sima Yi (司马懿, Tư Mã Ý), Sima Lang (司马朗), and Sima Fu (司马孚); Sima Xun (Sima Yi’s brother) (司马恂, Tư Mã Thuẫn) appears in the Jin-era genealogical layer as one of the Eight Sons of Sima Fang (司马八达) — eight brothers whose courtesy names all end in da (达, Đạt).
The brothers shared the Wen County pedigree and Han–Wei service culture while only Sima Yi, Sima Lang, and Sima Fu drew extended notice in Chen Shou and Pei Songzhi. This page marks the brother for Family wiki links on Sima Yi’s clan tree.
Role in Romance of the Three Kingdoms
Not a major Romance character. The Eight Sons are a historical genealogical set; the novel follows Sima Yi’s rise.
Sima Xun (Sima Yi’s brother) — Historical & Literary Timeline
Birth in Henei Sima house
Son of Sima Fang; younger brother of Sima Yi.
Han–Wei gentry life
Brother among the Eight Sons; independent career lightly attested.
Death
Approximate; SGZ core gives little narrative.
Key Relationships
Family
- Father Sima Fang (司马防, Tư Mã Phòng) — Eastern Han official; patriarch of the Eight Sons of Sima Fang (司马八达).
- Mother Wife of Sima Fang (司马防之妻, Vợ Tư Mã Phòng) — unnamed in Sanguozhi; mother of all eight brothers.
- Elder brothers Sima Lang (司马朗, Tư Mã Lãng) (Boda 伯达) and Sima Yi (司马懿, Tư Mã Ý) (Zhongda 仲达).
- Eight Sons roster: Sima Kui (司马馗) (Shuda), Sima Jun (司马均) (Jida), Sima Dan (司马诞) (Xianda), Sima Zhao (brother) (司马昭) (Yingda — not son Sima Zhao), Sima Xun (司马恂) (Jingda), Sima Fu (司马孚) (Youda, youngest).
Friends
- No named companions in Sanguozhi or the novel for this brother; the Eight Sons are a genealogical set, not a speaking fraternity in Luo Guanzhong.
Enemies
- No personal enemies named in the core record for this figure.
Other
- Character 恂 (Xun), not 通 (Tong). Identifying facts: 司马恂, brother of Sima Yi.
In Novel
General
In History
Summary
- Sima Xun — Seventh son; courtesy Jingda (京达). Younger brother of Sima Yi (司马懿) among the Eight Sons of Sima Fang (司马八达).
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