Clarence Augustus Rowland, b: 1880 - Dongara, Western Australia

^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}
^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}

^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}
^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}

^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}
^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}


			^{Richard Rowland}^{b.1801 Yorkshire, England d.1883 Donga, Western Australia}

		^{John Rowland}^{b.1849 Peninsula d.1920}	^{Elizabeth Johnson}^{b.1806 d.1892 Donga, Western Australia}

^{Clarence John Rowland}^{b.1908 d.1984 Glendalough}	^{Clarence Augustus Rowland}^{b.1880 Donga, Western Australia d.1979}		^{Joshua Edwards}^{b.1820 Forest Of Dean, UK d.1866 Gingin, Western Australia}

^{Gladys May Rowland}^{b.1909 d.2001}		^{Amelia Caroline Edwards}^{b.1852 Gingin, Western Australia d.1889 Donga, Western Australia}	^Emma King^{b.1830 Manche, United Kingdom d.1901 Wann, Western Australia}

^{Sydney Charles Rowland}^{b.1911 d.1971}			^{Charles Sloper}^{b.1829 Wiltshire, England d.1895 Donga, Western Australia}

^{Albert Percy Rowland}^{b.1912 d.1971}		^{Charles Sloper}^{b.1868 Donga, Western Australia d.1950 Gerald, Western Australia}	^{Dinah Elizabeth Hillier}^{b.1831 Collingbourne D, England d.1883 Donga, Western Australia}

^{Keith Edward Rowland}^{b.1919 d.1988 Swan Districts Hospital}	^Amy Sloper^{b.1888 Donga, Western Australia d.1978 Mayla, Western Australia}		^{Robert Pettit}^b.1834 d.

^Amy Rowland^{b. d.}		^{Emily Pettit}^{b.1859 Perth, Western Australia d.1938 Gerald, Western Australia}	^Mary Ann^b.1839 d.