Isolde Beidler
Isolde Beidler ( born Isolde von Bülow: 10 April 1865 – 7 February 1919 ) was the third of the five stepchildren and children of the composer Richard Wagner and his wife , who is generally known as Cosima Wagner ( though the two of them married only in 1870 ) . 
<triplet> Isolde Beidler <subj> 10 April 1865 <obj> date of birth <subj> 7 February 1919 <obj> date of death <subj> Richard Wagner <obj> father <triplet> Richard Wagner <subj> Isolde Beidler <obj> child <subj> Cosima Wagner <obj> spouse <triplet> Cosima Wagner <subj> Richard Wagner <obj> spouse