Renaud Laplanche (born 1970), French American entrepreneur and business executive
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Jean Laplanche (1924–2012), French author, theorist and psychoanalyst
Laplanche and his wife were interviewed, about both wine and psychoanalysis, in Agnès Varda's documentary The Gleaners and I.
In 1750 Fort Lawrence (located in the present-day community called Fort Lawrence on the Missaguash River, just west of Amherst, NS) was built by British troops on LaPlanche Street to defend the border of Nova Scotia.