Son of Kel; possibly related to the island of Kelsay.
Kelsen is a rare patronymic surname of Scandinavian or Germanic origin, likely meaning 'son of Kel'. It may also be a variant of the Scottish name Kelsay, referring to 'Cael's island'. In modern usage, it is often chosen for its similarity to established names like Kelsey or Jensen.
Less common today
Kelsen isn't in the latest US Top 1000. It last peaked at #6,313 in 2008.
Influential 20th-century legal philosopher and jurist
US births per 5-year period, 1990βpresent (SSA data).