John York Dewar, b: 1865 -

^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}

^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}
^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}

^{1789 Geo. Washington 1st USA president}
^{1789 French Revolution begins}
^{1798 Irish revolt against English rule}
^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}


			^John Dewar^{b.1782 Scotland d.1854 Upper Swan Western Aus}

		^John Dewar^{b.1827 United Kingdom d.1911 Gingin, Western Australia}	^{Mary Robinson}^{b.1790 d.1853 Upper Swan Western Aus}

	^{John York Dewar}^{b.1865 d.1946}		^John York^{b. d.}

^{Frank H. Dewar}^{b. d. World War One}		^Selina York^{b.1839 England, United Kingdom d.1917 Gingin, Western Australia}	^Ann Adams^{b. d.}

^{Ernest Leslie Dewar}^{b.1886 d.1965}			^{Richard Constant King}^{b.1799 Manche, United Kingdom d.1891 Middl, Western Australia}

^{Horace Augustus Dewar}^{b.1888 d.1898}		^{Daniel Constant King}^{b.1834 d.1890 Western Australia}	^{Elizabeth Gardiner}^{b.1800 Manche, United Kingdom d. Western Australia}

	^{Sarah Matilda King}^{b.1865 d.1932}

		^{Ann Mortimer}^{b.1841 United Kingdom d.1886 Western Australia}