__
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_JOHN SWAN __________|
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| |__|__
_Alexander SWAN ___|
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| | __|__
| |_MARGARET MCCROSSIN _|
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| |__|__
|
|--Alexander SWAN
|
| __
| __|__
| _____________________|
| | | __
| | |__|__
|_Elizabeth PITMAN _|
| __
| __|__
|_____________________|
| __
|__|__