Statistics for occurrence #1 of “St. Mary's” in chapter 11 of George Bancroft, History of the Colonization of the United States, Vol. 1, 17th edition.:

...ish to plant the first settlement so high up the river; Calvert descended the stream, examining, in his barge, the creeks and estuaries nearer the Chesapeake; he entered the river which is now called St. Mary's , and which he named St. George's; and, about four leagues from its junction with the Potomac, he anchored at the Indian town of Yoacomoco. The native inhabitants, having suffered from the superior ...
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