Maria Kalergis
Maria Kalergis von Nesselrode-Ereshoven ( 7 August 1822 Warsaw – 22 May 1874 , Warsaw ) was a Polish noblewoman , pianist , salon hostess and patron of the arts . 
<triplet> Maria Kalergis <subj> 7 August 1822 <obj> date of birth <subj> 22 May 1874 <obj> date of death