(£) per year. Arkwright had a reputation as a paternalistic employer who was concerned for the well-being of his employees and their families. A Sunday School was built at Cromford in 1785 and provided education to 200 children. By 1789, the Cromford Estate was back in the ownership of the Arkwrights, who actively influenced its structure and construction. Cromford was given a market place to act as a new focus for the village. Arkwright organised a market every Sunday and as incentive to attend, gave annual prizes to those who attended most often. After Arkwright died in 1792 his son, Richard Arkwright junior, took over and sold most of his cotton mills outside Cromford and Matlock Bath. The mills in Cromford and Matlock Bath were probably retained to support the Willersley Estate. Societies and clubs were created in Cromford. The religious affairs of the community were of less interest to Arkwright, and it was not until 1797 that Arkwright junior established Cromford Church; his father had envisaged it as a private chapel for the Arkwright family at Willersley Castle. The family's attempts to make Cromford self-sustaining through establishing a market was successful, and the village expanded until about 1840. This was even though the mills had passed their zenith and begun to enter decline in this period. Richard Arkwright junior was uninterested in the cotton business, and after the death of his father the Arkwright family ceased to invest in the industry. The Strutt family continued to invest, fuelled by the profits of their mills in Milford and Belper. They continued building mills into the 1810s, and by 1833 their business employed 2,000 people and had dominated the cotton industry in the Derwent Valley. As Arkwright had done at Cromford, the Strutts provided housing for their employees. Belper was already an established village with its own market before Jedediah Strutt began building mills, so he was not required to have as active a role in developing the community into a self-sustaining entity as Richard Arkwright did at Cromford. The Strutts provided education, and in 1817 650 and 300 children attended Sunday Schools in Belper and Milford respectively. Compared with Cromford, whose population had plateaued at around 1,200 in the early 19th century, the population of Belper rose from 4,500 in 1801 to 7,890 in 1831 due to the prosperity of the business. Darley Abbey also expanded as a worker's settlement