Leading Port HousesCálem - established 1859Churchill - established in 1981Cockburn - established in 1815Crofts - established in 1678Delaforce - established in 1868Dow & Co - established in 1798Ferreira - established in 1761Fonseca - established in 1822Gould Campbell - established circa. 1797W & J Graham & Co - established in 1820Guimarães - (belonging to Fonseca)Morgan - established in 1715Noval - established in 1813Offley Forrester - established in 1737Poças - established in 1918Quarles Harris - established in 1680Quinta do Côtto - established pre. 1300Ramos-Pinto - established in1880Royal Oporto - established in 1756Rebello Valente - (belonging to Robertson Brothers & Co)Robertson Brothers & Co - established in 1881Sandeman - established in 1790Silves & Cosens - (belonging to Dow & Co)Smith Woodhouse - established in 1784Taylor, Fladgate & Yeatman - established in 1692Warre & Co - established in 1670