Patrick Marmion (b. 1815) established an inn or hotel in 1849, on Lot 62, known as 'The Commercial'. A couple of years later the hotel was later renamed the 'Emerald Isle Hotel'. Patrick had migrated from Ireland on the Ganges, which arrived in Fremantle on 15 October 1841. He married Charlotte Stone in 1855 and they had one son. He was involved in the Fremantle Whaling Company in 1849 and was a Director of the Geraldine Mining Company. Charlotte continued the license of the hotel after Patrick's death in 1856, and she increased the size of her holding by the purchase of Lot 63 in 1862. On 10 January 1867, ownership of the hotel was passed on to the son, William. During the 1870s, William Marmion commenced a political career that culminated in his appointment as Minister for Lands and Mines (1890 - 1900), during the Forrest Administration. In July 1877, Frederick Caesar became publican of the 'Emerald Isle Hotel'. The Pictorial Australian, in 1885, called the hotel 'the most prominent house of entertainment for visitors and others in the port...the liquors are first rate and the same can be said of the general accommodation.'
 The Eagle 23 September 1986, p.7.
 Erickson, Rica Dictionary of Western Australians, Vol.3, p.562; Memorial 6/1162.
 Memorial , 6/2204.
 Fremantle City Council Library File 728.5, 9 July 1877.
 Pictorial Australian Vol.11, No.11, November 1885.