Question: Pre-1965, what two counties was this suburb of North London located in, which is also the birth place of Marc de Henrie?

Context articles: List of National Natural Landmarks in Michigan
North Ockendon
Embassy of North Korea, London
Ruter
Kensal Green
North Braddock, Pennsylvania
Whitakers, North Carolina
Marc Henrie
London Bridge Wharf
Cockfosters

The National Natural Landmarks in Michigan include 12 of the almost 600 United States National Natural Landmarks (NNLs).
 They cover areas of geological and biological importance, and include bogs, several forest types, and habitats for several rare species.
 The landmarks are located in 12 of the state's 83 counties.
 Two counties have two Natural Landmarks each, while two Landmarks are located in parts of two counties.
 The first designation, Warren Woods State Park, was made in 1967, while the most recent, the Porcupine Mountains, was made in 1984.
 Natural Landmarks in Michigan range from 24 to in size.
 Owners include Michigan State University, private individuals and several state and federal agencies.
North Ockendon is the easternmost and most outlying settlement of Greater London, England and part of the London Borough of Havering.
 It is located 18.3 mi east northeast of Charing Cross and consists of a dispersed settlement within the Metropolitan Green Belt.
 It was historically an ancient parish in the county of Essex, that was abolished for civil purposes in 1936.
 North Ockendon is the only area in London located outside of the M25 London Orbital Motorway.
 North Ockendon is located on the border with Essex.
 The area to the south is South Ockendon.
The Embassy of the Democratic People's Republic of Korea in London (Chosŏn'gŭl: 주 영국 조선민주주의인민공화국 대사관 ; MR: "Chu Yŏngguk Chosŏn Minjujuŭi Inmin Konghwaguk Daesagwan " ) is the diplomatic mission of North Korea to the United Kingdom.
 It is located in a detached house at 73 Gunnersbury Avenue on the northern corner junction with Baronsmede, in Gunnersbury, a suburban district of west London.
 It is notable for being one of the few embassies in London located in a suburban area, away from the central diplomatic areas of the city, and is the western-most embassy in the capital.
 The seven-bedroom property was purchased by the North Korean government for £ 1.3 million in 2003.
Ruter AS is the public transport authority for Oslo and Akershus counties in Norway.
 Formally a limited company – 60% of the shares in which are owned by the Oslo county municipality and 40% by that of Akershus – it is responsible for administrating, funding, and marketing (but not operating) public transport in the two counties, including buses, the Oslo Metro ("T-banen i Oslo"), Oslo Trams ("Trikken i Oslo"), and ferry services.
 Ruter also holds agreements with the Norwegian State Railways concerning the regulation of fares on commuter train services operated within the two counties.
Kensal Green is an area of north west London located on the southern boundary of the London Borough of Brent and the northern boundary of the Royal Borough of Kensington and Chelsea.
 The surrounding areas are Harlesden to the west, Willesden to the north, Brondesbury and Queens Park to the east with Ladbroke Grove and White City to the south.
 The areas of College Park and Kensal Green Cemetery are located in the London boroughs of Hammersmith & Fulham and Kensington & Chelsea, respectively.
 The area has numerous transport links and is located close to the site of Old Oak Common.
North Braddock is a borough in Allegheny County, Pennsylvania, United States.
 North Braddock was organized from a part of Braddock Township in 1897.
 The borough prides itself in being the "Birth Place of Steel" as the home of Andrew Carnegie's Edgar Thomson Steel Works that opened in 1875.
 North Braddock is a suburb 11 mi east of Pittsburgh with a 15-minute travel time to the city.
 The borough is located in the valley along the Monongahela River, and is made up of three jurisdictional voting wards.
Whitakers is a town in Edgecombe and Nash Counties in the U.S. state of North Carolina.
 It is divided between the two counties by railroad tracks and is the northernmost town in the two counties.
 It is part of the Rocky Mount, North Carolina Metropolitan Statistical Area.
 The population was 744 in 2010.
Marc de Henrie (born in Cockfosters, Hertfordshire, United Kingdom) is a British photographer.
London Bridge Wharf was a wharf in the City of London located alongside London Bridge, just to the east of the north end of the bridge.
 It stood below the Adelaide Buildings and their 1925 replacement, Adelaide House.
 The wharf was constructed on the site of the London Bridge Waterworks, which had been demolished along with Old London Bridge in 1832.
 It originally handled general cargo and also passenger steamships, such as the vessels of the New Medway Steam Packet Company, which offered daily "sea cruises" along the North Kent and Essex coasts.
Cockfosters is a suburb of north London, lying partly in the London Borough of Enfield and partly in the London Borough of Barnet.
 Cockfosters was located pre-1965 in the counties of Hertfordshire and Middlesex.