Lord Aleksandr Zivonik, Baron Zivonik, was a Manticoran peer of the realm and a native to Sphinx.
His parents emigrated to Sphinx from Ukraine on Earth as part of the original colonial expedition. He was the husband of Evelina Zivonik with whom he had seven children, including Karl, Larisa, Nadia, Stasya, Gregor, Lev and an adoptive daughter Sumiko. His sister, Aldona, was a member of the Sphinx Forestry Service.
He assisted Dr. Scott MacDallan when he investigated the death of a human who had been adopted by a treecat. (HHA2.1: TS, SK1)