Neklan was the sixth of the seven Bohemian mythical princes between the (also mythical) founder of the P?emyslid dynasty P?emysl the Ploughman and the first historical prince Bo?ivoj. The names of the princes were first recorded in Cosmas chronicle and then transmitted into the most of historical books of the 19th century including Franti?ek Palacký's The History of the Czech Nation in Bohemia and Moravia. According to the Chronicle of Dalimil, Neklan had two sons, Hostivít and D?polt.
One theory about the number of the princes is propped on the frescoes on the walls of the Rotunda in Znojmo, Moravia but Ane?ka Merhautová claimed that the frescoes depict all the members of the P?emyslid dynasty including the Moravian junior princes.
Neklan's name is thought to be derived from the Slavonic word "klát" meaning to tilt and prefix ne- (non) so it describes him to be a peaceful ruler. Závi? Kalandra thought the names of the seven princes were cryptical names of ancient Slavonic days of the week - Vojen being the sixth - Friday with just a confusing evidence. Another theory says that the names were mistaken from a coherent and partly interrupted old Slavonic text.
Once Vlastislav, the prince of Lu?ans (with their centre in ?atec on the river Oh?e), started war against Neklan and besieged his castle, Levý Hradec. Neklan didn't want the war in his country so he wanted to make peace with Vlastislav. However, his guide and second most powerful man in the Bohemian camps, a warrior called Tyr, persuaded him to lend him his armour. So Tyr went to war in place of Neklan, like Patroclus once in place of Achilles. He stroke a fierce battle of Tursko and although he died, Bohemians won and Lu?ans were killed to a man (literally, one man escaped the field having followed a witch's instructions).