Jorkoam was either a descendant of Caleb or the name of a place connected with the tribe of Judah. The reference in Chronicles does not make the identification certain.
Definition
Jorkoam is a name whose identification is uncertain. It may refer to a descendant of Caleb son of Hezron, or it may be the name of a place belonging to the tribe of Judah.
Biblical Usage
Jorkoam is mentioned in the genealogical material of Chronicles.
Historical Background
The supplied record does not determine whether Jorkoam was a person or a locality.
Historical Bible Dictionaries
Smith's Bible Dictionary
(paleness of the people), either a descendant of Caleb the son of Hezron, or the name of a place in the tribe of Judah. (1 Chronicles 2:44)