General Brock. Found 10 Records, 8 Photos and 1,559,932 Family Trees. Born in Princess Ann, Virginia, USA on 1761 to Noah Brock and Sally Olds. He passed away on 1779 in Niagra Falls, New York, USA. Family Members.
This because AB- type has both A and B antigens but has no Rh antigen. 2. AB Negative type is not a great donor. Again due to absence of the Rh antigen but presence of A and B antigens, the AB- blood type donor can only donate blood to AB- and AB+ blood type individuals.
1 AB Negative is the rarest blood type, and less than a percent of the world's population has this rare blood. 2  There will be slight differences in the rarity of blood types depending on location and country, but generally, this blood type is not seen very often.3  B Negative. This blood type is also extremely rare, and only about two percent of the population has this type of blood. 2  In general, all blood types that are negative are more rare than the positive. 3  B Negative is the second rarest type of blood in the world.