Why turkey has the same name as Turkey
"oats," Northern English, late 13c., probably from Old Norse hafre, from Proto-Germanic *habron- (cf. 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]
"owner, possessor," late 14c., agent noun from have.
outer borough of London, forming part of its northeastern perimeter. Havering belongs to the historic county of Essex. It was created in 1965 from the former borough of Romford and the urban district of Hornchurch, and it includes such areas as (roughly from north to south) Havering-atte-Bower, Noak Hill, Collier Row, Chase Cross, Harold Hill, Harold Park, Marks Gate (in part), Mawney Park, Gidea Park, Harold Wood, Romford, Squirrel's Heath, Emerson Park, Hornchurch, Upminster, Cranham, Hacton, Corbets Tey, North Ockendon (in part), South Hornchurch, Rainham, and Wennington. The Hornchurch Marshes, Rainham Level, and Wennington Level front the River Thames on the southern edge of the borough.