Brewer's: Champion and Severall
A “champion” is a common, or land in allotments without enclosures. A “severall” is a private farm, or land enclosed for individual use. A champion also means one who holds a champion.
The champion differs from severall much For want of partition, closier, and such.
Tusser: Five Hundred Points, etc. (Intro.).
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894