Short answers, pulled from the story.
William Blake Richmond is best known for his portrait work and the decorative mosaics he designed and installed in St Paul's Cathedral in London. He worked on the quire and apse of St Paul's from 1891 to 1904, installing over seventy allegorical mosaic panels.
Richmond was named after the poet William Blake because Blake was a close friend of his father, the portrait painter George Richmond. The naming was a tribute to that personal friendship.
Richmond served as Slade Professor of Fine Art at the University of Oxford from 1878 to 1883, succeeding his friend and mentor John Ruskin. He was responsible for twelve lectures a year and resigned after a disagreement with Ruskin over the merits of Michelangelo.
Richmond founded the Coal Smoke Abatement Society in 1898 after becoming frustrated with low winter light levels in London caused by coal smoke. The organisation became the oldest environmental NGO in the United Kingdom and eventually became Environmental Protection UK.
Richmond influenced the Arts and Crafts Movement through his collaboration with Harry James Powell of James Powell and Sons, developing new colours for mosaic glass that were added to the standard Powell glass palette from the early 1890s. The heavier, colour-streaked glass he helped create was widely adopted by Arts and Crafts artists for stained-glass windows and decorative work.
Richmond designed a five-light east window and three-light north and south chancel windows for St Mary's Church, Stretton, East Staffordshire, completed in 1896 and 1898 respectively. He also designed three large windows for the Lady Chapel of Holy Trinity, Sloane Street, London, between 1904 and 1910.