Who married Johanna Bathildis Gräfin zu Castell-Castell?

Johannes Lobkowicz married Johanna Bathildis Gräfin zu Castell-Castell on September 2, 1977. Johanna Bathildis Gräfin zu Castell-Castell was 25 years old on the wedding day (25 years, 7 months and 10 days). Johannes Lobkowicz was 23 years old on the wedding day (23 years, 0 months and 11 days). The age gap was 2 years, 6 months and 30 days.