Original sentence: By 1912, the movement had spread to all parts of Canada, and had become so popular that on July 24 1912 Agnes Baden-Powell created Lady Mary Pellatt "Chief Commissioner of the Dominion of Canada Girl Guides".Many Guide events were held at Lady Mary Pellatt's home, Casa Loma, in Toronto
Edited sentence: By 1912, the movement had spread to all parts of Canada, and had become so popular that on July 24 1912 Agnes Baden-Powell created Mary, Lady Pellatt "Chief Commissioner of the Dominion of Canada Girl Guides".Many Guide events were held at Lady Pellatt's home, Casa Loma, in Toronto