What does the red hand of Ulster signify?

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Tags

1. #pagan
2. #earls
3. #believed
4. #ulster
5. #burgh
6. #times
7. #norman
8. #gaelic
9. #origin
10. #although
11. #records
12. #culture
13. #surviving
14. #meaning
15. #hiberno
16. #rooted
17. #documented
18. #first
19. #where
20. #century
21. #unknown