Parents

• Henry Petty Cayce Col. (1819–1875)
• Mary Frances Slade (1827–1899)

Spouses

• John C. O'Bryan

Siblings

• George Washington Cayce (1843–1915)
• Charlotte Virginia Weems Cayce (1849–1908)
• Henry Petty Cayce Jr. (1846–1930)
• Mary Frances Slade Cayce (1851–1934)
• Augustus Stanley Cayce d.yng. (1855–1859)
• Harriett Ewell Cayce d.yng (1859–1862)
• Lillian Otis Cayce (1862–1904)
• Shadrack Augustus Cayce d.inf. (1869–1870)

Children

• Lillian O'Bryan

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