Son of Maud; son of Matthew
A modern creative spelling of Madison, which originated as an English surname. It historically indicated 'son of Maud' (a form of Matilda) or 'son of Matthew.' While the 'son of' suffix is literal, the name has been used almost exclusively for girls in the United States since the 1980s.
Less common today
Madysen isn't in the latest US Top 1000. It last peaked at #1,099 in 2002.
US births per 5-year period, 1990βpresent (SSA data).