In 1929, he owned a property in Vila de São Bernardo, the old name for the district located in the city of São Bernardo, which comprised the current cities of São Bernardo do Campo, São Caetano do Sul, Diadema and Santo André, although most of the government facilities were allocated in the latter one's lands.[3]
When Getúlio Vargas's intervenor (acting as Governor of São Paulo) Adhemar de Barros decided to transfer the city's seat to Santo André and downgrade São Bernardo as a mere district, a group of entrepreneurs, Wallace Simonsen leading, founded the Society of Friends of São Bernardo (Sociedade de Amigos de São Bernardo), claiming for emancipation.
The claim was successful, and in 1944 a state decree established the new city, including "do Campo" suffix to the former district denomination, and appointing Simonsen as the first mayor,[4] which was eventually deposed by Adhemar de Barros in 1947 due to political divergencies between them, giving path to the ascension of Tereza Delta as the new mayor.[1]
The original Simonsen's farmstead still exists, named as Woodland Farm (Chácara Silvestre) now at an avenue named after him, as a municipal heritage site.[1]
^Cristino, Vânia (March 31, 1998). "BC conhece desfalque no Noroeste há um mês" [Central Bank of Brazil is aware of Noroeste's defrauding a month ago]. O Estado de S. Paulo. p. B8. Retrieved December 12, 2013.