This decade saw Sir Henry Pellatt rise to command the Queen's Own Rifles, receive a knighthood, and begin building the country home that would become Casa Loma.
- 1900, November 5. C Company of the Queen's Own Rifles returned to Toronto from South Africa.
- 1901. QOR used as workers when the street car employees of the company owned by Pellatt and others went on strike.
- 1901. Duke of York visited Canada.
- 1901. Pellatt involved in the start of Brazilian Light and Traction Company with a 40 year monopoly. This company became Brascan.
- 1901–1902. HMP became the Commanding Officer of the Queen's Own.
- 1901, January 22. Queen Victoria died, ending a 63 year reign. Succeeded by Edward VII.
- 1901, October 11. The Duke of Cornwall and York and the Duchess (later King George V and Queen Mary) visited Toronto. A white charger used by HRH was lent to the Duke for use while in Canada. He expressed his interest in the horse, but to no avail.
- 1901, October 13. HMP's mother Emma Mary Pellatt died.
- 1902. HMP is in command of 600 QOR troops which were sent to the Coronation of King Edward VII. They missed the coronation when it was rescheduled from June 27 to August 9. QOR had to return on July 3. HMP paid for the QOR Bugle Band to attend the event.
- 1902. HMP spoke out against the prohibition referendum.
- 1903. US wins a dispute with Canada over a boundary dispute in Alaska, in which Britain is the third member of a tribunal.
- 1903. Orville and Wilbur Wright conduct the first US powered flight near Kitty Hawk, North Carolina.
- 1904. Fire destroyed most of the downtown Toronto business section.
- 1904, October 1. QOR travelled to Buffalo as guests of the 74th Regiment, National Guard.
- 1905. 74th Regiment, National Guard visited Toronto and encamped on the Garrison Common.
- 1905. HMP received a knighthood and became Sir Henry.
- 1906. The stables of the proposed country home on Spadina Avenue, north of Davenport Road, completed.
- 1906, April 26. Lieutenant General Pellatt took 891 men to New York City for a military tournament in Madison Square Gardens.
- 1906. A Royal Commission on Insurance shows just how Sir Henry wheels and deals with the funds of the company.
- 1906, April 18. San Francisco is in ruins following an earthquake.
- 1906. The Niagara Power Company was formed to transmit power to Toronto.
- 1907. The stock market crashed.
- 1907, January 28. Sir Henry promoted to rank of Colonel.
- 1907. Created a Knight Bachelor in the King's New Year's Honour list.
- 1908, February 4. QOR chapter Imperial Order, Daughters of the Empire formed. In November the Pellatts entertained the regiment at a party and fun fair at the castle.
- 1908. QOR battalion attends the Quebec Tercentenary.
- 1908, October 14. Reginald Pellatt marries Marjorie Carlyle Perry at the Bloor St. Presbyterian church, and they retire to 26 Prince Arthur Avenue.
- 1909, July 24. Sir Henry's father dies.
- 1909. E. J. Lennox went to court to get money from the City of Toronto for what he felt he was owed for the construction of a City Hall.
Continue the story with the next decade of Sir Henry Pellatt's life, 1910–1920, or return to the full timeline highlights.