Mycielski (feminine form MYCIELSKA, plural MYCIELSCY/MYCIELSKIE) - a noble Polish family of the Dołęga clan. "The first record of a Mycielski is from 1437 when brothers Florian and Mikołaj were in a dispute with vicar Jan of Kościelec."
The hereditary title of Count was bestowed on Józef Mycielski (1794-1867) in Prussia, by King Frederick Wilhelm III on 20 June 1822 LP 30 July 1822, recognised in Austria on 16 April 1896
Some notable Mycielskis: