Freckled or speckled
Brecken is derived from the Irish surname O'Breacain, which stems from the Gaelic word 'breac'. It historically refers to someone with freckles or a variegated appearance. While rare, it fits the modern trend of using Irish surnames as first names.
Less common today
Brecken isn't in the latest US Top 1000. It last peaked at #712 in 2017.
US births per 5-year period, 1990βpresent (SSA data).
American actor known for the film Clueless