| | | | |
| Pelham Aldrich R.N. | Explanation |
| Son of Dr Pelham Aldrich of Mildenhall, Suffolk |
| |
| Date (from) | (Date to) | Personal |
| 8 December 1844 | | Born |
| 1875 | | Married Edith Caroline, daughter of Wootton Issacson, of Huntington |
| 22 August 1902 | | C.V.O. (Commander of the Royal Victorian Order) |
| 12 November 1930 | | Died (Great Bealings, Suffolk) |
| The crinoid (feather star, related to sea urchins) Bathycrinus aldrichianus was named after him by Sir Charles Wyville Thomson, scientific leader of the Challenger expedition |
| |
| Date | Rank |
| June 1859 | Entered Navy |
| 11 September 1866 | Lieutenant |
| 3 November 1876 | Commander |
| 29 June 1883 | Captain |
| 21 December 1898 | Rear-Admiral |
| 17 August 1903 | Vice-Admiral |
| 1907 | Admiral |
| 1908 | Retired Admiral |
| |
| Date from | Date to | Service |
| 1866 | | Lieutenant in Scout, commanded by John Adolphus Pope Price, Pacific |
| 18 December 1869 | | Additional Lieutenant in Lord Warden, commanded by Thomas Brandreth, flagship of Admiral Alexander Milne, Mediterranean |
| 15 November 1872 | 1875 | Lieutenant in Challenger, commanded by George Strong Nares, Admiralty-Royal Society round-the-world oceanographic expedition |
| 1875 | 1876 | Lieutenant in Alert, commanded by George Strong Nares, British Artic Expedition (commanded the Western Sledge Party to Ellesmere Island) |
| 27 November 1877 | 17 November 1880 | Commander in Sylvia (until paying off at Sheerness), surveying, China |
| 1 January 1880 | 6 April 1883 | Commander in Fawn (until paying off), surveying, Mediterranean |
| 8 April 1884 | | Captain in Sylvia, surveying, Cape of Good Hope, then Gibraltar |
| 1886 | | Captain in Egeria, surveying, Australia |
| (1891) | 1891 | Captain in Research, surveying |
| 1893 | | Captain in Hawke, Mediterranean |
| 1896 | | Inspecting Captain of Boys Training Ships |
| 1 September 1899 | 31 August 1902 | Admiral Superintendent of Portsmouth dockyard |