Parents:

Carl Friedrich Wilhelm Wagner (1770-1813), Richard's real father was probably Ludwig Geyer
Johanne Pätz (1774-1848)

First Wife:

Minna Planer (1809-1865), no children

Second Wife:

Cosima von Bülow (1837-1930, the daughter of Franz Liszt), two children with Hans von Bülow and three children with Richard Wagner

Children:

Isolde (1865-1919), married to Franz Beidler
Eva (1867-1942), married to Houston Stewart Chamberlain
Siegfried (1869-1930), married to Winifred Williams Klindworth (1897-1980)