i have read some stuff about Holmes that i don't remember reading in the stories. i am mentioning them here. can anyone tell me which of them are correct and what are the sources of that info?
1. holmes was born on 6th January.
2. he was irish.
3. he had an elder brother (apart from Mycroft) called Shennilin who was 10 years senior to holmes.
4. the famous deerstalker was never mentioned in the stories.