Not a Guernsey person but a place today...

Grange Lodge Hotel

Grange Lodge Hotel was built as a private house in 1830  from profits made through privateering. 
It was designed by John Wilson who transformed much of the town between 1813 and 1831. Two different people commented his work, Andros in 1902 and Brett in 1970s and it appears his designs are like Marmite; love them or hate them!  
This is from CE Brett’s book...

Grange Lodge Hotel: A pretty piece of battlement neo-Tudor nonsense; by January 1831 Charles de Jersey Esq, His Majesty’s Attorney General, has taken possession of his new and elegant house, Grange Lodge, almost certainly by Wilson; the quatrefoil-pierced balcony parapet echoes that on Elizabeth College lodge.  Andros, who  hated Wilson, reached the same conclusion on the question of attribution, if not on the question of taste. ‘I feel morally certain (it) must have been designed by Wilson, and which after much consideration I have made up my mind is the ugliest house he is guilty of...’ The central block three-bay three-storey, but the square-arcaded ground floor extends almost twice its length; the piers dividing the openings of the arcade are chamfered, and ornamented with grotesque masks.

In the 1920s it was bought by the Mansell family who began running it as a hotel and, aside from a 6 year break during the German Occupation of the Channel Islands (1940-1945) and into 1946 when the Liberation forces used it as an Administration HQ, they have run it ever since. (Taken from the interpretation board but I’m not sure it is still in the Mansell family)

When German forces occupied the island in 1940 they needed accommodation. They took over many of the empty hotels including Grange Lodge, which was to become the Guernsey Civil Affairs Command ( a branch of the Channel Islands Feldkommandantur).

Law and order during the Occupation 

The Feldkommandantur dealt with all civilian matters in co-operation with the island’s civil authorities. Throughout the course of the Occupation the Feldkommandantur issued proclamations from Grange Lodge, imposing new laws that severely impacted the lives of islanders. These included proclamations for carrying Identity Cards at all times, imposing curfews, food rationing, and the confiscation of motor vehicles and wirelesses, as well as restrictions of the formation and meeting of clubs and associations for groups of more than three people. Many islanders were imprisoned in the island for disobeying these laws, and for more serious offenses sent away.

In September 1942 the Feldkommandantur at Grange Lodge issued a notice demanding the deportation of all British subjects who were not born in the island, along with their families. 

The Guernsey Police Force continued to operate during the Occupation of Guernsey. However, many sought to help rather than restrict islanders. Indeed in 1942 more than half of the Guernsey Police Force were taken to the Feldkommandantur headquarters after arrest for stealing food from German depots and redistributing it to those islanders in great need.
These Police Officers were subsequently tried and received sentences of up to four and a half years hard labour and were deported to a variety of different prisons in France and then on to labour and concentration camps in Germany. This is an emotive issue in the island now because there are again calls that they should receive an posthumous apology. I don’t know enough about it to form an opinion.