The ten hundreds were an interesting time for England and Scarborough. In 1000AD a Christian chapel was built at Scarborough. In 1066AD, the chapel along with the town of Scarborough was destroyed by Hardrada (King of Norway) and Tostig (brother of Harold of Wessex). This was part of failed ploy to take the throne from Harold II , King of England.

"Harold II", King of England, was to be subsequently defeated at the battle of Hastings later in the year by an invasion of Normans led by William the Conqueror (Ruler of Normandy, and subsequent King of England 1066 - 1087).

The Normans were Vikings that settled in France, and became Christians as part of a peace settlement with the French. Highly religious, and concerned with the saving of their souls, they spend a great deal of their ill gained wealth building churches and castles throughout Normandy and England.

Work on York Minster began around 1080.

The Domesday book was compiled in 1086. Interestingly, Scarborough is NOT mentioned. Perhaps this is because it was destroyed by Hardrada 20 years earlier.

Although there may have been lookout activities where Scarborough Castle is currently located, the Falsgrave area was probably the most prominent area for farming and village activity. The main families of Northumbria held the Manor of Falsgrave, and took rent and services from the populace. In 1066 it was part of the estate of Earl Tosti, the brother of King Harold. After the destruction instigated by Hardrada (King of Norway),Scarborough slowly rebuilt itself, and received its first charter from Henry I in 1100.

Falsgrave Manor stretched to Filey until the Filey area was gifted to Hunmanby Manor (own by Gilbert De Gant and his successors) by "William The Conqueror" (Gilbert and William were related) in 1080AD. The gift was for assisting in the "Harrying of the North" which began in the winter 1069AD.

It was probably during this period that the last vestiges of pagan beliefs in England were routed out and completely suppressed through the zeal of the Norman conquest of England.

One of the greatest aims of many during this time was to visit the Holy City of Jerusalem. I would speculate that it was during this period (earlier than ~1060AD) that "Oliver's Mount", "Jacob's Mount" and Falsgrave received their names probably by individuals with experience of Jerusalem.
(Falsgrave i.e. "False Grave" - possibly related to Christ death and resurrection - Any thoughts or information on this speculation would be appreciated).

The first of the Crusades began in 1096 under William II ( Crusaders gathered from all over western Europe ) . The main reason for the Crusade was because the Turks ( who had captured Jerusalem in 1071AD ) were harassing Christian pilgrims on their pilgrimage to Jerusalem. The Crusades were to last for over three and a half century and were probably the most on-going pressing event on everyones lives during these times.