In 1841 a survey was carried out of all the farmland in England and Wales in order to determine what tithe each farm should pay. We thus have an accurate picture of Gelligaer at this time. 1841 was also the date of the first census in which every person in every household was recorded, although there had been censuses conducted every ten years since 1801. It can also be noted that the centralised collection of Births, Marriages, and Deaths began in 1836 and that, coincidently, Queen Victoria came to the throne in 1837.  Although the industrial revolution had started before this date, its direct impact on Gelligaer up to this time had not been great, so 1841 is a convenient break point in the History of Gelligaer. Up to this point the whole of Gelligaer had been very much an agricultural parish but the next 50 years were to see it transformed into a coal mining parish. This section contains information of some of the farms before 1841