https://www.sydney.edu.au/paradisec/australharmony/marsh-family.php
MARSH, Henry (Henry Charles Nibbs MARSH; Henry Charles MARSH; Henry MARSH; H. MARSH)
Musician, pianist, conductor, composer, music teacher, musicseller, music retailer, music publisher
Born Sidmouth, Devon, England, 1823; baptised Colaton Raleigh, Devon, England, 9 June 1823
Married Louisa DAWSON (1826-1916), St. Clement's, Truro, Cornwall, 7 July 1845
Arrived Sydney, NSW, 12 February 1849
Departed Sydney, NSW, July 1874 (per British India, for San Francisco)
Died Alameda, California, USA, 17 May 1906 (probate 7 December 1906)
MARSH, Louisa (Louisa DAWSON; Mrs. Henry MARSH)
Amateur vocalist
Born Devon, England, 11 July 1826; daughter of James Theophilus DAWSON (1799-1878) and Louisa Elizabeth ANGEL (1802-1886)
Died Alameda, California, USA, 28 September 1916