After the marriage of Prince Ferdinand of Saxe-Coburg and Gotha with Princess Maria Antonia Koháry de Csábrág in January 1816[REF] and the death of his father-in-law, Prince Ferencz József Koháry de Csábrág, in 1826, Prince Ferdinand inherited the Hungarian princely estate of Koháry and converted to Roman Catholicism.
August (1818-1881), was the father of Ferdinand I of Bulgaria.