You don't have to visit the published co-ordinates, but will get some good views if you do. The coordinates take you to the Mabel Greville Breakwater, and I wondered why it was given this name. Some historical delving, and I soon discovered that it was named after a large convalescent home on the cliffs here - the Mabel Greville Convalescent Home, sadly demolished in the 1980s and the current private houses built in its place.
But who was Mabel Greville?
I discovered that Mabel Elizabeth Georgiana Smith was born in London in 1867 at a prestigious address in Hanover Square. In 1889, she married Alwyn Greville and by the 1891 census they were living at the family pad - Warwick Castle! The Honourable Alwyn was the second son of the 4th Earl of Warwick, and in the tradition of upper class families of that time, was in the army. By 1915 he was a Lt. Col. in the King's Royal Rifle Corps, an equerry to His Majesty George V.
Mabel and Alwyn enjoyed an upper class lifestyle, in large houses with plenty of servants. For example, in the 1911 census they were listed as living in Danbury Palace, Essex, with 22 people in their household - mainly servants.
Widowed in 1929, Mabel was an active traveller with an enviable lifestyle. For example, in 1937 she travelled on the ship Almazora to Rio de Janeiro with a servant.
However, she was also active in local good causes, in line with other upper class ladies of the area. Miss Hanbury of Hylands House in Chelmsford undertook fundraising activities for the Mabel Greville Convalesent Home in 1928.
The convalescent home had originally been built in 1882 by a local entrepreneur Philip Brannon on the high cliffs at Walton. He named it Highcliff Mansion, and it was designed as a hotel to support his "Naze Park" project for holidaymakers. He planted a sweeping avenue of holm oaks (still there today) up his newly-named Naze Park Road, and planned to develop the Naze into a bustling holiday resort. Unluckily for him (but probably luckily for us), the project failed and in 1886 Highcliff Mansion became the St Osyth Home of Rest for the Working Girls Protection Society of London, training girls for service and providing holidays for the overworked.
In 1901, the building was converted into a private college, and in 1922 became the Mabel Greville Convalescent Home giving care to wounded soldiers, supported and funded by Mabel Greville. In the 1920s, the breakwater at Hipkins' beach was built and named after the large house at the top of the cliff.
After a short spell as a children's home, the building was sold in 1939 and eventually demolished in 1984. The breakwater itself continues to use the name, although it is only about half the length it was originally as a large section fell down in a storm in 2012.
In the photo, the Convalescent Home and Breakwater are both clearly visible, as is the path up the cliffs which is still there today.
To find the cache, please answer the following questions.
The cache can be found at N 51 51.ABC E 001 16.DEF
A = Mabel's husband Alwyn was Equerry to King George A
B = In 193B, Mabel travelled to Rio de Janeiro
C = Mabel was born in 18C7
D = Mabel married Alwyn Greville in 188D
E = The convalescent home was originally built in 18E2
F = The number of the Earl - 1