Daily AncestorGilbt.
Gilbt. in old records is an abbreviation of the first name Gilbert.
Gilbt. drops the middle of Gilbert and keeps the last letter, which clerks often raised above the line. It appears in tax lists, deeds and census name columns.
Name charts made for genealogists list Gilbt. among the common first-name abbreviations. If an index gives Gilbt as a name, search for Gilbert too.
As seen in a recordName column of the 1860 census
Gilbt. Ostrander, 37, Miller
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Daily Ancestor. "Gilbt.." Dictionary of Old Record Words. https://dailyancestor.com/dictionary/abbreviations/gilbt. Last checked 2026-10-12.