Freeholder (5)
(Other definitions for owner that I've seen before include "Holder, proprietor" , "Possessor, proprietor" , "One who has something" , "Person with legal title to something" , "Holder, possessor" .)
'freeholder' is the definition.
(yeoman is a kind of freeholder)
This is the entire clue.
(Other definitions for yeoman that I've seen before include "Historically, English freeholders and footsoldiers" , "Warder of the Tower of London" , "Countryman" , "Beefeater was this Tower warden's nickname" , "Former royal servant" .)