One of the earliest mentions of Mrkonjić were written by the Venetian-Croatian friar and poet Andrija Kačić Miošić (1704-1760) in Vitezovi Imotske krajine.

[4] Da je komu pogledati bilo ljutu zmiju Petra Mrkonjića: u njega su oči sokolove, a desnica Miloš Kobilića!

ognjenoga rata od Kandije.In Serbian epic poetry, he has a hero status[5][6] along with other hajduks such as Starac Vujadin, Pecija, Golub, Starina Novak, Bajo Pivljanin, and others.

He is also the subject of a folk poem collected from the people's bards by Serbian linguist Vuk Stefanović Karadžić (1787-1864) in Jaut-beg i Pero Mrkonjić.

[7] In 1925 the "Organization of Serbian Chetniks - Petar Mrkonjić" was founded, though it was banned by King Alexander I of Yugoslavia four years later when he instituted a dictatorship.