Czar Boris of Bulgaria
Czar Boris of was born in 0855.  Czar Boris of is no longer alive.

 Princess Marija of Bulgaria
Princess Marija of was born in 0872.  She died at the age of 66 in 0938.

 Princess Marija of Bulgaria
Princess Marija of was born in 0893.  She died at the age of 45 in 0938.

 Princess Olga of Bulgaria
Princess Olga of was born in 0899.

 Czar Nikola of Bulgaria
Czar Nikola of was born in 0902.  He died at the age of 45 in 0947.