research information:

Château de Hénencourt

Unreliable: ( don't know where he got it from)

During the 15th century, the 1640's, the castles main building was built. It wasn't until the 1700's that the building was remodeled to what we see today, sans the left wing. The architect who remodeled the cháteau was name Corben Seneschl.

http://lasommedetef.wixsite.com/lasommedetef/single-post/2016/02/16/de-ch%C3%A2teaux-H%C3%A9nencourt

Right next to the battle of somme, the cháteau was headquarters to many British Troops, including the 58th London division.

https://ww1revisited.com/2014/09/03/somme-henencourt-chateau/

In 2014, the Somme, Picardy, where Hénencourt is located, became part of the Hauts-de-France region. The Hauts-de-France region is an upper France region.

Hauts-de-France, http://www.francethisway.com/places/a/henencourt-somme.php

Reliable:

Charles Malo de Fraincois Lameth was married to Marie Anne Picot and had two children, Jenny jean baptiste marie louise de lameth and Agustine de Lameth, who died a year after her birth. They resided in the Château as do there descendants now. The Château is now a private residence and is only open periodically for tourist exploration.â

http://gw.geneanet.org/wailly?lang=en&p=charles+malo+francois&n=de+lameth

During WWI, while all the men left for war, the Comtesse de Hénencourt lived in the Château until the left wing was destroyed. after the destruction of the wing Comtesse de Hénencourt and all the dairy maids took the cows and left the area. Her husband, a corporal, was away in war during this time.

http://www.gutenberg.org/files/3317/3317-h/3317-h.htm

Brigadier General CBB white of the 1st ANZAC Corps Headquarter was a general in Hénencourt. He along with Birdwood had offices and occupied Château de Hénencourt during WWI.

https://www.awm.gov.au/collection/RCDIG0000520/?image=2 ( includes more photos of Hénencourt, all public domain photographs.)