Pierre Poumeau Flor was born at the Lilleaker farm in Vestre Aker, Norway. He was the son of General War Commissioner Jens Lorentz Flor (1730-1806) and Maria Bolette Heegård (1752-1787). His father later bought Haugbu farm in Asker in Akershus and settled his family there. Flor completed his legal examination in 1792. He subsequently acted as an assistant to his father as a military auditor. In 1797, he served with the Asker Regiment (Akershusiske infanteriregiments) and in 1799 was a second lieutenant with the Vestre Laurvig Company (Vestre Laurvigske kompani).  
From 1806 to 1811, he managed the family farm at Asker. In 1816, he formed the newspaper Drammens Tidende together with Søren Tybring who was vicar of Bragernes Church in Drammen. He served as co-editor until 1817. 
- Skjæveland, Yngve. "Pierre Flor". Norsk biografisk leksikon (in Norwegian). Retrieved 3 March 2012.
- Knut Are Tvedt. "Lilleaker". Store norske leksikon. Retrieved June 25, 2016.
- Knut Dørum. "Pierre Poumeau Flor". Store norske leksikon. Retrieved June 30, 2016.
- "Haugbu med Fjelken nedre. Asker herad.Akershus". Matrikkelutkastet av 1950. Retrieved June 30, 2016.
- "Peter Flor". lokalhistoriewiki.no. Retrieved June 30, 2016.
- "Pierre Poumeau Flor". Norsk samfunnsvitenskapelig datatjeneste AS. Retrieved June 30, 2016.
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