I found this article about the presumed birth date of Mr. Sherlock Holmes interesting, Of course, there's nothing new here for most Sherlockians: Watson (or Conan Doyle) never told us exactly when Sherlock's birthday was. The topic apparently never came up.
Still. it's fun to speculate when the great detective may have been born, as well as why he seemed so fond of William Shakespeare's Twelfth Night. So, even though it may all be just speculation, many happy returns on this Epiphany and your birthday, Mr. Holmes!
I'm a stay-at-home dad, and Director of Music Ministries at a United Methodist Church in Mt. Juliet, TN, and a longtime fan of Mr. Sherlock Holmes.