Gao is a Chinese surname whose familiar form 高 means “high.” However, Gao can also represent the distinct surnames 郜 and 皋. The written character is therefore essential: an English-language record saying only Gao cannot settle the name's meaning or identify a family branch. The surname dictionary distinguishes these three forms.
Meaning and the Different Chinese Forms
The Dictionary of American Family Names connects 高 with a fief called Gao granted to a prince of Qi, and separately with Zi Gao, another Qi prince's style name. For 郜, it gives an ancient state in present-day Chengwu, Shandong, whose name became a surname after annexation by Song. It glosses 皋 as “marsh,” recording personal-name and ancient community-name explanations. See the separate explanations under Gao.
These are different formation routes, not three interchangeable ways to write one family name. In particular, “high” is a character meaning; it is not evidence that a Gao ancestor was unusually tall, lived on a hill, or held elevated social rank. A word's dictionary definition and the circumstances in which a family acquired its surname answer different questions.
Origin Traditions and Later Surname Adoption
The dictionary also repeats legendary ancestry accounts: 高 through Gao Yuan under the Yellow Emperor, and 皋 through Gao Yao under Emperor Shun. These should be treated as traditions, not dated proof of hereditary surname use. For later acquisition of 高, it records Emperor Wenxuan of Northern Qi granting the surname to Yuan Jingan and Yuan Wenyao, and adoption by some Xianbei and Korean families in northern China. Read the Gao entry's numbered accounts.
The distinction matters when assessing a pedigree. An account explaining a clan's name does not establish a continuous chain of parents and children from that ancestor to a living person. Nor does an early personal name containing Gao necessarily demonstrate that its bearer inherited Gao as a surname. To test hereditary use within a particular branch, look for the surname across connected generations, preserving the wording and date of each record.
A prestigious origin story should remain a separately labelled claim until the family connections can be checked. The modern surname alone establishes neither royal descent nor a reader's ethnicity or ancestral village. The site's East Asian surname guide provides broader context for Chinese naming traditions.
Why Gao May Appear as Kao
Kao is an attested Chinese variant of Gao in the surname dictionary's Kao entry. One specific explanation is romanization: the Library of Congress conversion table maps Wade–Giles kao to pinyin gao. Its romanization rules also explicitly omit tone marks. This helps explain why Latin-script catalog records can lose distinctions preserved in Chinese writing. See the 2012 table, pp. 1 and 13.
Gao and Kao can consequently be useful paired searches without implying that a family changed its Chinese surname. Preserve the spelling actually used in each document rather than silently standardizing all records to Gao. To connect a Gao record with a Kao record, compare the character, given names, relatives, dates, and locality. A romanization equivalence is a search aid, not an identity match.
Do not expand the search into every similar-looking name automatically. Li offers a useful comparison because it too can conceal different Chinese characters; it is not a Gao variant. Our article on Chinese surnames across dialects and romanization systems explains why original writing and local language information belong alongside the Latin spelling.
Researching a Particular Gao Family
Begin with the nearest documented generations and work toward a specific place and family branch. FamilySearch's guidance for finding a jiapu, or clan genealogy, recommends collecting the surname character, ancestral hometown down to village level, ancestral hall name, remembered ancestors, and any generation poem. These clues help select a genealogy rather than simply a book bearing the same surname. See Sarah Zimmerman's guide to using jiapu.
1. Recover the written surname. Ask relatives for family papers or photographs of inscriptions. Keep an image as well as a transcription, and establish whether the character is 高, 郜, or 皋 before attaching a meaning to the family. 2. Build a spelling timeline. Record Gao, Kao, and any other form actually found, with the document date and place. Search additional forms as hypotheses; retain the original names in your notes. 3. Identify the village and branch. Record place names in Chinese where possible. A province or a surname match is too broad to choose between genealogies. Search with the ancestral hall or known generation information when available. 4. Connect to the genealogy through known people. Compare parents, spouses, siblings, dates, and residence. Note the genealogy's compilation date and distinguish its statements from independently corroborated records. If the link to your documented ancestor is missing, record the book as a candidate rather than adopting its entire pedigree.
For a family with a United States immigration history, Chinese exclusion-era case files may add evidence absent from a name index. The National Archives describes interrogation transcripts containing information about applicants, relatives, and communities in China and the United States. Its Seattle finding aid explains these records. Read the complete file where available: statements collected under restrictive immigration procedures need comparison with other evidence, especially when names or relationships conflict.
Use the surname evidence checklist to separate a character identification, a possible spelling connection, and a proven relationship. A successful first result might be identifying the correct written surname or ruling out a same-named household; neither requires claiming an ancient lineage.
References
- Patrick Hanks, ed. Dictionary of American Family Names. Oxford University Press, 2003; FamilySearch reproduction credits 2003 and 2006. Entries Gao, explanations for 高, 郜, and 皋, and Kao, Chinese variant explanation.
- Library of Congress. Chinese Romanization Table, 2012 version, p. 1, romanization rules, and p. 13, Wade–Giles/Pinyin conversion for kao/gao. PDF.
- Sarah Zimmerman. “Use Jiapu to Grow Your Chinese Family Tree.” FamilySearch, March 18, 2022, especially “How to Find Your Jiapu on FamilySearch.org.” Article.
- National Archives and Records Administration. “Chinese Exclusion Act Records at the National Archives at Seattle.” Online finding aid, accessed September 7, 2026, discussion of interrogation transcripts in Record Group 85. Finding aid.