 MacLean of Coll sold the island to the Marquess of Salisbury in 1845 , who converted it into a sporting estate . The island was then owned by the Campbell family from 1870 to 1888 , when John Bullough , a cotton machinery manufacturer and self @-@ made millionaire from Accrington in Lancashire , acquired the island , and continued to use it for recreational purposes . The estate 's prospectus for the 1888 sale described Rùm as " the most picturesque of the islands which lie off the west coast of Scotland " and " as a sporting estate it has at present few equals " . It gave its population as between 60 and 70 , all either shepherds or estate workers and their families . There were no crofts on the island . When Bullough died in 1891 he was buried on Rùm , in a rock @-@ cut mausoleum under an octagonal stone tower . This was later demolished and his sarcophagus moved into an elaborate mausoleum modelled as a Greek temple . He was succeeded in the ownership of Rùm by his son , George Bullough . 
