Possibly a variant of Thaddeus, meaning heart or courageous.
Thaden is a rare surname-turned-first-name. It is most likely derived from the Germanic surname Thaden, a patronymic form of Thade, or used as a modern variant of the biblical name Thaddeus. In some contexts, it may also be linked to Old English roots meaning a valley or clearing.
Less common today
Thaden isn't in the latest US Top 1000. It last peaked at #8,919 in 2004.
US births per 5-year period, 1990βpresent (SSA data).
Pioneering American aviator and winner of the first Women's Air Derby