Leonardo Schwartz Bismarck (b. September 14, 2001) is the member of the Bismarck and Schwartz Family. Born into Cousin Marriage between his Parents, he nearly died in Infancy. Leonardo was born in St. Louis County, Minnesota.

In 2015, a diagnose of Meniere's Disease, which was genetically transmitted from his parents due to Mutating Risks of Cousin Marriage in the Bismarck Family. He has been affected and is very well classified as an Inbreed, his parents were so Genetically Distanced with the most common DNA. The DNA of Bismarck and Schwartz Families between so connected due to too much Coupling Up with eachother that their children as Cousins coupled up multiple times.