Given this paragraph about the Northamptonshire County Cricket Club, can you list down some points that can be inferred about the County Championship?

Northamptonshire County Cricket Club is in Division Two of the County Championship; the team (also known as The Steelbacks) play their home games at the County Cricket Ground, Northampton. They finished as runners-up in the Championship on four occasions in the period before it split into two divisions.

In 2013 the club won the Friends Life t20, beating Surrey in the final. Appearing in their third final in four years, the Steelbacks beat Durham by four wickets at Edgbaston in 2016 to lift the Natwest t20 Blast trophy for the second time. The club also won the NatWest Trophy on two occasions, and the Benson & Hedges Cup once.

Based on this paragraph, it seems like the Country Championship refers to some form of organized competition between cricket teams belonging to different counties. The Championship has been organized for at least four times given that the Northamptonshire County Cricket Club finished as runners-up in it for four times. It also seems like the Championship was split into two divisions at some point.