She has profiles on FamilySearch and Ancestry.
I have not found her birth record
First names: Pauline and Pearl She is recorded under Pauline from 1900 to 1915, and under Pearl beginning in 1920.
There is a 1920 census record in Brooklyn with head Charles Seedman, wife Eva Seedman born about 1890, and sister-in-law Pearl Plean born about 1898. I believe Pearl is Pauline Plean and Eva is Eva Plean.
1920 marriage Pearl Plean married Leonard A Mandel, 28 May 1920 in Brooklyn. They had one daughter, Elaine, who died as an infant. And a second daughter who appears in the 1930 and 1940 census records.
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Featured National Park champion connections: Pearl is 25 degrees from Theodore Roosevelt, 29 degrees from Stephanus Johannes Paulus Kruger, 23 degrees from George Catlin, 26 degrees from Marjory Douglas, 34 degrees from Sueko Embrey, 24 degrees from George Grinnell, 35 degrees from Anton Kröller, 26 degrees from Stephen Mather, 33 degrees from Kara McKean, 28 degrees from John Muir, 29 degrees from Victoria Hanover and 36 degrees from Charles Young on our single family tree. Login to find your connection.