https://www.findagrave.com/memorial/9512257/permelia-waldo-comstock
(history there you may not be aware of)
Found Marshall on Find-a-grave:
https://www.findagrave.com/memorial/59757463/marshal-h.-comstock
(history there you may not be aware of)
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Found her on Ancestry search:
Permelia Waldo Gross
Birth 18 OCT 1835 • Kentucky
Death 4 DECEMBER 1916 • Jack County, Texas, USA
Spouse & Children
Marshall H. Comstock 1828–1885
(also was married to Susan Rupe 1825–1855)
Boullin Franklin Comstock 1856–1945
Sarah Elizabeth Comstock 1858–1892
William G. Comstock 1860–1890
Thomas T. Comstock 1866–1893
Felix W. Comstock 1869–1936
Charles Marshall Comstock 1872–1955
John Todd Comstock 1873–1958
Ada May Comstock 1878–1964
Sorry, but can't seem to find anything about Permellias family.