This is the 12610th most frequent German word.
weldon
The word "weldon" is not a German word.
In this sentence, 'Weldon' is used as a proper noun to refer to a name.
Ich habe den Namen Weldon schon einmal gehört.
I have heard the name Weldon before.
Here, 'Weldon' is part of a term or concept, likely named after a person or entity associated with it.
Die Weldon-Methode ist in vielen Schulen beliebt.
The Weldon method is popular in many schools.
In this usage, 'Weldon' is used as part of the name of an organization or business entity.