Ellerman had little interest in public recognition. in appreciation of his contribution to British shipping needs during the
Boer War, but he could readily have obtained a higher honour if he had wanted one. His lifestyle was not ostentatious. In 1916, he stated that he was worth £55 million (). This may well have been correct, as he had no reputation for self-aggrandisement. The following year, a journalist estimated that his shipping interests alone were worth £35 million. At this time, the
Duke of Westminster was generally reckoned to be the second-richest man in the United Kingdom, with a fortune of around £14 million. When Ellerman died in 1933, his estate was assessed for
probate in 1936 at . (). The previous record was £13.5 million left by
Lord Iveagh of the
Guinness Brewery in 1927. Ellerman had negotiated the
Great Depression skillfully, but his wealth at death must have been well below its 1920s peak. Ellerman lived a secretive life in
Mayfair and
Eastbourne. Although he did purchase
New Slains Castle in Scotland in 1916, he subsequently dismantled it and removed its roof to avoid roof tax, leaving it a ruin by 1925. He made no attempt to join high society or enter politics. One possible reason is that from the early 1890s he lived with a woman called Hannah Glover, and had a daughter by her in 1894, but did not marry her until 1908, the year before the birth of his only son, who was also called
John Ellerman. He was buried at
Putney Vale Cemetery. ==Descendants==