Hello: I am interested in hearing from anyone on this list who has or knows of someone who has a condition called Haemophilia B. This is also known by such terms as Christmas Disease, or Factor IX deficiency. According to researchers, only 1 of every 30,000 people have Haemophilia B. I have this condition, and have traced it back to my gt-gt-grandparents, William CLINE and Margaret NELSON. To date, I have not been able to establish which of them passed it down. Margaret NELSON's family came from Clones, Monaghan, Ireland, while William CLINE was born in Southwell, Nottinghamshire, England. Any assistance would be most appreciated Dennis Galley, Port Elgin, Ontario, Canada