Prince Peter of Sayn-Wittgenstein-Sayn (b.1992) [son of Alexander, Prince of Sayn-Wittgenstein-Sayn (b.1943) & his wfe Gabriela, nee Countess of Schonborn-Wiesentheid (b.1950)] married (or plans to marry) Yurina Rachael Hattori-Roche (b.1994) this year.
Peter is the youngest of his parents' seven children (one sister deceased) and last one who marries.