Siebert
A German and English surname from a very old Germanic personal name meaning roughly “victorious and bright.”
The #5,059 most common surname in the United States (2010 Census) — about 1 in every 44,539 Americans shares it.
Etymology
Siebert comes from an old Germanic personal name, usually explained as Sigibert or Sigebert. The name is built from elements meaning “victory” and “bright” or “famous,” so the overall sense is “victory-bright” or “glorious in victory.” In English surname use, it is often treated as a form related to the English names Sebright or Seabright.
History
Historical surname dictionaries place Siebert mainly in German usage, with English writers also linking it to older English spellings and related forms such as Sebright. The name has long been associated with medieval Germanic given names borne by early rulers and nobles, which helped the form persist as both a personal name and a surname. In English sources, some spellings drifted toward Seabright and other variants.
Origin
Regions
Variant spellings
Fun fact
19th-century surname scholars often connected Siebert with a chain of related names that all trace back to the same “victory” root, showing how a single ancient name could branch into many surname forms.
From the historical record
“Cp. Bradweil. SIEBERT, a French form of the Teut. Sigebert: V. under Sebright'. SlEMMSl _ „!,„= n„ SIEMS } - S'"'^' "l-'- SIEVEKING seems to be for the O.Norse SiiSviking-r, denoting one belonging to SflS(a)vik [O.N. sOS-r, south + vtk, inlet, bay]”
— Surnames of the United Kingdom: a concise etymological dictionary (2 vols in 1)