Bartosz: Last Name Origin and Family Crest

The spelling Bartosz grew out of Bartczak, a Polish surname with a long paper trail. The name is usually explained as “Son of Bartek”.

Bartosz coat of arms

Heraldry is personal: arms associated with the Bartczak surname were borne by specific families, and sharing the name does not mean sharing the blazon.

Bartosz and Bartczak

Before spelling was fixed, Bartczak was also written Bartosz. Spellings drifted because names were written down by ear in parish books, tax rolls and passenger lists. You may also find the name written Bartosik.

According to the 2010 US Census, the Bartosz surname had 397 bearers. It sits within the 100,000 most common last names in the country. Want more than a summary? See the Bartosz family name pack.