Most of the life of Petko Kiryakov was not unveiled by historians but by the prominent Bulgarian writer Nikolai Haitov, who wrote a novel and a script which was turned into a TV series, which became a favourite of most Bulgarians.
Historians wrote a lot about Kiryakov life
( z1 write :ARG0 ( z2 historian ) :ARG1 ( z3 lot :topic ( z4 life :poss ( z5 person :name ( z6 name :op "Kiryakov" ) ) ) ) )