Son of Maud
A creative spelling of Madison, which originated as an English surname meaning 'son of Maud.' Maud is a Germanic form of Matilda, meaning 'mighty in battle.' While traditionally a patronymic surname, it has been used as a feminine given name in the United States since the 1980s.
Less common today
Madason isn't in the latest US Top 1000. It last peaked at #6,154 in 2004.
US births per 5-year period, 1990βpresent (SSA data).