*Date of Seniority Royal Navy 28 May 1840
Lennox Thompson Cunningham was born in Antrim, Ireland. He was appointed Surgeon in the Royal Navy 28 May 1840 and was appointed Surgeon to the Bittern in 1841 
He was appointed Surgeon-Superintendent on the Hyderbad
to Van Diemen's Land in 1849. He kept a Medical Journal from 26 April to 4 September 1849 while on this voyage.
In the 1851 Census Lennox Cunningham is 48 years of age and his wife Jane age 51. His status is a visitor at Warkworth at the house of Winefred Forster age 70 and Catherine Forster age 30.
Sir Robert Seppings 1852
Lennox Thompson Cunningham was employed as Surgeon Superintendent on the Sir Robert Seppings to Van Diemnen's Land in 1852.
He was listed in the Medical Registry of 1865 -
Lic. Royal College Surgeons Edinburgh 1827,
Extra Lic. Royal College of Physicians London 1841 (Carrickfergus)
In 1860 he was serving on H.M.S. Formidable at Sheerness and was admitted as member to the Royal College of Physicians.
In the Scottish Postal Directory
1868 - 1869 his address is Lennox Thompson Cunningham M.D. R.N., 20 Warrington Cresc., Edinburgh.
In the 1881 Census he resided in in Midlothian, Scotland with his wife Jane Forster and gives his age as 73 and occupation retired Royal Navy surgeon.
He died on 9th January 1888 at Edinburgh.
 Nautical Magazine