Pearl
Maigen is a modern phonetic spelling variant of Megan, which is a Welsh diminutive of Margaret. The name ultimately derives from the Greek word 'margarites', referring to a pearl.
Less common today
Maigen isn't in the latest US Top 1000. It last peaked at #7,849 in 1995.
US births per 5-year period, 1990βpresent (SSA data).