"Plath" Versus "Platt": Her Real Last Name

Otto Plath's Ellis Island entry record, September 1900

A couple of biographers say Sylvia Plath's family name is really "Platt," and they did not make that up; they can point to two federal documents, one calling Sylvia's future father "Otto Platt" (above), and the 1910 U.S. census calling her grandfather "Theodor Platt." Yet dozens of other documents, U.S. and German, including signatures, say "Plath" back to 1826. The Plaths knew their own name. "Platt" was a clerical error, common in U.S. official papers. But then . . .

"Plath" was not a rare name. Wisconsin was crawling with Plaths, unrelated, when Sylvia's father started college there. "Plath" or "Platt," meaning "flat" or "low," indicates origins in northern Germany's lowlands and wetlands (see the red in the map, its original here). Plath versus Platt? The German language's historic consonant and vowel shifts did not reach the north, so the north's Low German dialect has the "th" that High German famously does not except for words borrowed from Greek such as Bibliothek and Mathematik, and names such as Theodor or Goethe. It's "t" with a little puff of air.

Now, the exception: The Plath who became a Platt after threatening by mail to kill folks he said owed him money. [1]

January 1914

What we know of Otto's youngest brother Hugo Friedrich Plath suggests one who had big plans. Born in 1890, fifth of six children, Hugo did not want to farm in Oregon with his father and brothers Paul and Max. In 1911, age twenty, Hugo returned to the U.S. from Canada where he'd tried to cash in on a building boom. At the border he claimed to have no relatives [2] and then moved restlessly between Oregon and Washington state. Three years later Hugo threatened -- idiotically, in writing -- to kill a father and daughter. Hugo in 1917 claimed exemption from the draft because his parents were his dependents. [3] They probably weren't; his mother was in a public mental hospital. I wondered if Hugo might be mentally ill, but the army found him sane enough to enlist him in July 1918. In December 1918 he was discharged with a 12.5 percent disability for an injured eye. [4]

Hugo "Platt" married briefly and divorced. [5] (The Plaths, for their era, had a high divorce rate: Otto, 1; Max, 3; Hugo, 1, and younger sister Frieda Plath married a divorced M.D. whose wife had alleged "extreme cruelty.") [6] Hugo maybe alternated between "Plath" and "Platt" to dodge the warrant and any demands for alimony. Hugo "Platt" in the 1940 census was jobless after working on a WPA highway project. By 1942 he had settled in a Long Beach, California, trailer park, naming a lawyer as his next of kin. [7] In the 1950 census "Platt" lives in his trailer, unable to work. He died in 1974, age eighty-three, outliving all his siblings.

The army recorded two names for him (see card below). [8] The state of California issued two death records, one for Hugo "Platt" and one for Hugo "Plath."

[1] Oregon Daily Journal [Portland], 18 January 1914, p. 8.

[2] "Plath, Hugo F., Contractor," U.S. Border Crossings, Port of Eastport, Idaho, August 1911.

[3] Plath, Hugo Friedrich, WWI draft registration card, 5 June 1917.

[4] Oregon, U.S., State Military Records 1846-1977, WWI Army Statement of Service Cards 1917-1919, image 25794.

[5] The Recorder [San Francisco] 21 January 1924.

[6] The Recorder [San Francisco], 21 September 1931, p. 1.

[7] Platt, Hugo F., WWII draft registration card, 1942.

[8] U.S. Veterans Administration Master Index, 1917-1940.