Prince Heinrich XX Reuss (b.24 November 1975) [younger of two sons of Prince Heinrich XX Reuss (b.1944) & his wife Dorit, nee Freiin von Ruffin (b.1948)]
married Marie Steinhoff this year.
Source:
Descendants of King Willem I of the Netherlands
Prince Guy of Orleans e Braganza (b.8 October 1985) [youngest of six children of Prince Eudes of Brazil (b.1939) & fourth by his current wife Mercedes, nee Neves da Rocha (b.1955)]
married Amanda Gabriel Sao Clemente de Azevedo this year.
Source:
Descendants of King Louis Philippe I of the French
Prince Michel of Orleans, Count of Evreux (b.1941) [son of Henri, Count of Paris (1908-1999) & his wife, Princess Isabelle of Orleans e Braganza (1911-2003)]
married, as his second wife, Barbara Edle von Posch Pastor (b.1951) in Chateau de Menetou (France) on 29 April.
He was previously married (1967-2012) to Beatrice Pasquier de Franclieu (b.1941) by whom he has four children: Clotilde (b.1968), Adelaide (b.1971), Charles-Philippe, Duke of Anjou (b.1973) & Francois, Count of Dreux (b.1982)
Six days after his wedding he became a grandpa for tenth time: a grandson named Philippe was born (firstborn son of Francois & his wife Theresa, nee von Einsiedel (b.1984)
Other grandchildren are:
Louis-Nicolas (b.1995), Charles-Edouard (b.1996), Gaspard (b.1999), Augustin (b.2005) & Eleonore - children of Clotilde & her husband Edouard Crepy (b.1969)
Diego (b.2003), Almudena (b.2004) & Gaetano (b.2009) - children of Adelaide & her husband Pierre-Louis Dailly (b.1968)
Isabella (b.2012) - daughter of Charles-Philippe & his wife Diana Alvares Pereira de Melo, Duchess of Cadaval (b.1978).
Sources:
http://heinbruins.nl/LouPhil.html
https://sites.google.com/site/myroyalworld/2017-genealogical-information
Princess Marie-Gabrielle de Nassau (b.8 September 1986) [daughter of Prince Jean of Luxembourg (b.1957) & his first wife Helene Vestur (b.1958)]
married civilly Antonius Wilms (b.22 December 1988) [son of Countess Maria Theresia von Goess (b.1953) & her husband Hayo Wilms (b.1947)]
in Luxembourg.
Both spouses have three siblings each: the bride is the eldest of four children, only daughter and first one who marries; her brothers are Constantin (b.1988), Wenzeslaus (b.1990) & Carl-Johann (b.1992).
Antonius is third of four children, younger son and second one who marries; his sister Marie Caroline (b.1979) & her husband Alejandro Bremme y Gamazo (b.1978) have two daughters: Flavia (b.2011) & Milana (b.2016).
He has also a brother Johannes (b.1980) and another sister Anna Sophie (b.1991)
Sources:
http://geneall.net/fr/name/360284/antonius-willms/
https://sites.google.com/site/myroyalworld/2017-genealogical-information