Alvin Derby, b: -


		^{James O'Brian}^{b. d.}
	^{William O'Brian}^{b.1833 Ogdensburg, NY d.1881 Bennington, VT}
		^Margaret^{b. d.}
^{William Edward O'Brian}^{b.1867 Searsburg, Bennington, VT d.1943 Searsburg, Bennington, VT}
			^{Joseph Crosier}^{b.1786 Halifax, Windham, Vermont d.1844 Searsburg, Bennington, VT}
		^{David Crosier}^{b.1812 Halifax, Windham, Vermont d.1879 Searsburg, Bennington, VT}
			^Sally Stowe^{b.1784 Grafton, Worcester, MA d.1864 Searsburg, Bennington, VT}
	^{Laura Adelia Crosier}^{b.1835 Searsburg, Bennington, VT d.1899 Searsburg, Bennington, VT}
			^Alvin Derby^{b. d.}
		^Emily Derby^{b.1812 Hawley, MA d.1893 Clarksburg, MA}
			^Mary^{b. d.}