SNGF: Historical County Boundaries

Per Genea-Musings.  I went with two locations actually: first was Mendon, Monroe, New York; the second was Livonia, Livingston, New York.  Although in different counties, they are actually quite near each other.



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My ancestors (Collins, Jackman, Doyle) arrived in Mendon in 1809 and 1811 respectively.  In 1828 some of them decided to move to nearby Livonia.  Thanks to the challenge, I now have a better idea where to look when I pursue land records for these ancestors.  Both Mendon and Livonia were a part of Ontario County until Monroe and Livingston were formed in 1821.