Modern invented name, possibly derived from Maddox
Madex is a contemporary American invention, likely created as a stylistic variation of the Welsh name Maddox or the English surname Maddux. It follows the popular trend of using the 'x' ending to create a sharp, energetic sound. While it lacks a deep historical etymology, it is often associated with the meaning 'son of Madoc' or 'fortunate' by extension of its phonetic roots.
Less common today
Madex isn't in the latest US Top 1000. It last peaked at #8,680 in 2014.
US births per 5-year period, 1990βpresent (SSA data).