Meaning and name origin
Lech \l(e)-ch\ as a boy's name is of Slavic origin. Slavic mythology: name of the founder of the Polish people. His brothers Russ and Czech were the progenitors of the Russian and Czech nations, respectively. The name was borne by Lech Walesa, the courageous shipyard worker and labor organizer who led the campaign to bring down the Communist government in Poland.
Lech is not a popular first name for males but a very popular surname or last name for all people (#28738 out of 88799, Top 32%) (2000 U.S. Census).
Displayed below is a comparison of the popularity of the boy name Lech and related names. The only popular variation form ranked in the Top 1000/100 is Russ. (2014 statistics).