Agyeya
Sachchidananda Hirananda Vatsyayan ( 7 March 1911 – 4 April 1987 ) , popularly known by his "nom de plume" Agyeya ( also transliterated Ajneya , meaning 'the unknowable' ) , was an Indian writer , poet , novelist , literary critic , journalist , translator and revolutionary in Hindi language . 
<triplet> Agyeya <subj> 7 March 1911 <obj> date of birth <subj> 4 April 1987 <obj> date of death <subj> Hindi <obj> writing language