1900
From Tolkien Gateway
June
- ? - Mabel Tolkien and her sister May Incledon are received into the Church of Rome, bringing about the wrath and opposition of their strongly Baptist relatives.
September
- ? - J.R.R. Tolkien is admitted into King Edward's School after passing the entrance exam.
Late
- ? - The Tolkiens move from Sarehole to Moseley to be closer to Birmingham and King Edward's School.