Catherine's maiden name is given as Garrettson in her grandson Louis Orndorff Willis's biography in Williams's History of Frederick County, Maryland.[1] The biography says that her father was Garrett Garrettson of Harford County, Maryland.
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MD4Z-37C : 12 April 2016), Catherine Finlay, Baltimore, ward 15, Baltimore, Maryland, United States; citing family 963, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
Find A Grave, database and images (https://www.findagrave.com : accessed 11 August 2019), memorial page for Catherine Finlay (1787–12 Apr 1855), Find A Grave Memorial no. 27196168, citing Saint Georges Episcopal Church Cemetery, Perryman, Harford County, Maryland, USA ; Maintained by RTerry (contributor 46537864) .
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