__
_Philander Warren Duffield _|__
_Frank Moreland Duffield _|
| | __
| |_Armilla Marsh _____________|__
_Emerson Anderson Duffield _|
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| | ____________________________|__
| |_Lutica Friback __________|
| | __
| |____________________________|__
|
|--Robert Duffield
|
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| ____________________________|__
| __________________________|
| | | __
| | |____________________________|__
|____________________________|
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| ____________________________|__
|__________________________|
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|____________________________|__