haver (n.2) Look up haver at Dictionary.com
"owner, possessor," late 14c., agent noun from have.
haver (n.1) Look up haver at Dictionary.com
"oats," Northern English, late 13c., probably from Old Norse hafre, from Proto-Germanic *habron- (source also of Old Norse hafri, Old Saxon havoro, Dutch haver, Old High German habaro, German Haber, Hafer). Buck suggests it is perhaps literally "goat-food" and compares Old Norse hafr "he-goat." "Haver is a common word in the northern countries for oats." [Johnson]