Question: After whom was the defence installation of which, Ouvrage Le Lavoir is a part named ?

Context articles: North Head, New Zealand
Stony Batter
Fort Scratchley
Ouvrage Le Lavoir
Maginot Line
Ouvrage Pas du Roc
Fort Perch Rock
MoD Sealand
Bassingbourn Barracks
Fort Queenscliff

Maungauika is a volcano forming a headland called North Head at the east end of the Waitemata Harbour in Auckland, New Zealand in the suburb of Devonport.
 Known for its sweeping views over the harbour and the Hauraki Gulf, since 1885 the head was mainly used by the military as a coastal defence installation, which left a network of accessible old bunkers and tunnels as its legacy, forming part of the attraction.
 The site was protected as part of Hauraki Gulf Maritime Park in 1972 and listed as a Category I historic place in 2001.
 As part of a 2014 Treaty of Waitangi claim settlement the volcanic cone was officially named Maungauika and the reserve renamed Maungauika / North Head Historic Reserve.
 Maungauika is the Māori word for" Mountain of Uika".
Stony Batter is a historic defence installation at the northeastern end of Waiheke Island, Auckland, New Zealand.
 It is sited within a 50-acre (200,000 m²) scenic reserve of the same name, owned by the New Zealand Department of Conservation (DOC).
 The park serves double duty as a historical (Category 1 Historic Place) and nature reserve, containing unusual rock formations, three significant bush blocks and three concrete gun emplacements with an extensive tunnel system, reputed to be the largest in New Zealand.
Fort Scratchley, a former coastal defence installation, is now a museum.
 It is located in Newcastle East, a suburb of Newcastle, New South Wales in Australia.
 It was built in 1882 to defend the city against a possible Russian attack.
 However, its guns were not fired in anger until 8 June 1942, during the shelling of Newcastle.
 The Australian Army left the site in 1972.
Ouvrage Le Lavoir Is a work ("gros ouvrage") of the Maginot Line's Alpine extension, the Alpine Line, also called the Little Maginot Line.
 The ouvrage consists of two entry blocks, one infantry block, three artillery blocks and one observation block 6 km south of Modane, France, guarding the Col de Fréjus.
 The surface barracks at Le Lavoir were connected to Charmaix by an aerial tram.
The Maginot Line (French: "Ligne Maginot" , ] ), named after the French Minister of War André Maginot, was a line of concrete fortifications, obstacles, and weapon installations built by France in the 1930s to deter invasion by Germany.
 Constructed on the French side of its borders with Switzerland, Germany, and Luxembourg, the line did not extend to the English Channel because the French military did not want to offend neutral Belgium.
Ouvrage Pas du Roc is a work ("gros ouvrage") of the Maginot Line's Alpine extension, the Alpine Line.
 The ouvrage consists of one entry blocks, one infantry block, two artillery blocks and one observation block 6 km south of Modane and 1.6 km east of Ouvrage Le Lavoir in the vicinity of the Col de Fréjus.
 The position was incomplete at the outbreak of war in 1940.
Fort Perch Rock is a former defence installation situated at the mouth of Liverpool Bay in New Brighton.
 Built in the 1820s to defend the Port of Liverpool, its function has changed from defensive, to tourist attraction and museum.
 It has been, and is still used as a venue for musical concerts and has been listed as a Grade II* Listed Building.
MOD Sealand is a civilian Ministry of Defence installation in Flintshire, in the north-east corner of Wales, close to the border with England.
 It is a former Royal Air Force station, active between 1916 and 2006.
Bassingbourn Barracks is a Ministry of Defence installation located 3.2 mi north of Royston, Hertfordshire and 10.6 mi southwest of Cambridge, Cambridgeshire, England.
Fort Queenscliff, in Victoria, Australia, dates from 1860 when an open battery was constructed on Shortland's Bluff to defend the entrance to Port Phillip.
 The Fort, which underwent major redevelopment in the late 1870s and 1880s, became the headquarters for an extensive chain of forts around Port Phillip Heads.
 Its garrison included volunteer artillery, engineers, infantry and naval militia, and it was manned as a coastal defence installation continuously from 1883 to 1946.
 The other fortifications and armaments around the Heads were completed by 1891, and together made Port Phillip one of the most heavily defended harbours in the British Empire.