The Albert Blanchard that I found had at least the following kids: Marie, Martha, Laura or Dora, Loretta, Electa, Elaine or Elida, Clebert, Birdie and Bertina. By 1920, Martha was the widow of a Dore. Le Comite des Archives de la Louisiane has published transcripts of the cemeteries of St. Martin Parish. Albert, Erasie, Birdie, Bertina and possibly Martha are listed on page 191. On page 195 there is a M/M Joseph Blanchard which may be your ancestors.
In 1900 and 1920 Albert Blanchard was a farmer. By 1920, he was a house carpenter.