Another view to the origin of name is also related to the Czech word "práh" (in the mean of a threshold) and a legendary etymology connects the name of the city with princess Libuše, prophetess and a wife of mythical founder of the Přemyslid dynasty. She is said to have ordered the city "to be built where a man hews a threshold of his house". The Czech "práh" might thus be understood to refer to rapids or fords in the river, the edge of which could have acted as a means of fording the river – thus providing a "threshold" to the castle.