Klemens von Metternich
Klemens Wenzel Nepomuk Lothar, Prince von Metternich-Winneburg zu Beilstein, KOGF (; 15 May 1773 – 11 June 1859) was an Austrian diplomat who was at the center of European affairs for four decades as the Austrian Empire's foreign minister from 1809 and Chancellor from 1821 until the liberal Revolutions of 1848 forced his resignation.
Klemens Stefan Sielecki
He married Wanda Maria née Szczerba (November 21, 1910 in Brzozów – June 12, 1998 in Kraków) in 1935 in the Church of St. Anne, Kraków. For this marriage he converted from Greek to Roman Catholicism. Together they had three children: Krystyna Elżbieta (October 14, 1936 in Kraków – March 2, 2003 ibid.) who became a doctor of dermatology; Renata Beata (born August 27, 1942 in Kraków) and Leszek Michael (born October 12, 1944 in Chrzanów), who also studied engineering at the technical universities in Kraków and Vienna to later work for Simmering-Graz-Pauker in Vienna and New Delhi, and MAN Ferrostaal in New Delhi, Bangkok and Kuala Lumpur. All married and have children themselves.