Family name origins & meanings
- English : habitational name from any of various places, for example Longden, the Middle English form that underlies Longdendale in Cheshire and Derbyshire. This is a compound of Old English lang, long ‘long’ + denu ‘valley’. A place called Longden in Shropshire, however, has the same origin as Langdon, so there has clearly been some confusion between the two forms.