Gracious
Jacek is the Polish diminutive form of Hyacinthus, though in modern usage it is often associated as a cognate of John. It carries the traditional meaning of divine favor and has been a staple in Poland for centuries.
Less common today
Jacek isn't in the latest US Top 1000. It last peaked at #3,015 in 2013.
US births per 5-year period, 1990โpresent (SSA data).
Polish singer-songwriter and poet known as the 'Bard of Solidarity'
Renowned Polish surrealist painter
Polish professional footballer who played as a winger