Leinonen Family History
Leinonen Surname Meaning
Finnish: from leina an old adjective meaning ‘gloomy miserable’ (compare Leino) formed with the surname suffix -nen.
Known since the Middle Ages in Savonia in the east of Finland from where it has spread to Kainuu northern Karelia and northern Finland.
Source: Dictionary of American Family Names 2nd edition, 2022
