Elizabeth's actual date of birth is unknown, records range from 1807-1814. It is believed that Elizabeth is buried in an unmarked grave in the same cemetery where her daughter Mary is buried as Elizabeth was living with her in the 1880 census. Elizabeth (Eliza) Robinson Boyd lived with her daughter and son-in-law (Mary S. Boyd - Eliphalet Lester Arnold) in Montgomery Co., Texas. She also lived with her daughter and son-in-law Lucretia Ann Boyd Etheridge and Benjamin Randolph Etheridge in 1880 - see their 1880 census for Montgomery Co., Texas below:
Eliza Boyd
in the 1880 United States Federal Census

Name: Eliza Boyd
[Eliza Robinson]
Age: 68
Birth Date: Abt 1812
Birthplace: South Carolina
Home in 1880: Montgomery, Texas, USA
Dwelling Number: 69
Race: White
Gender: Female
Relation to Head of House: Mother-in-law
Father's Birthplace: South Carolina
Mother's Birthplace: South Carolina
Neighbors: View others on page
Household Members:
Name Age
E. L. Arnold 41
Mary S. Arnold 40
M. S. Arnold 9
S. E. Arnold 4
Lizzie Arnold 14
Eliza Boyd 68
Source Citation
Year: 1880; Census Place: Montgomery, Texas; Roll: 1320; Page: 58C; Enumeration District: 123
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Eliza Boyd
in the 1880 United States Federal Census
Name: Eliza Boyd
[Elizabeth Ann Robinson]
Age: 70
Birth Date: Abt 1810
Birthplace: South Carolina
Home in 1880: Montgomery, Texas, USA
Dwelling Number: 15
Race: White
Gender: Female
Relation to Head of House: Mother-in-law
Father's Birthplace: South Carolina
Mother's Birthplace: South Carolina
Occupation: At Home
Neighbors: View others on page
Household Members:
Name Age
B. R. Ethridge 52
Ann Ethridge 43
Ida Ethridge 26
John B. Ethridge 22
William Ethridge 19
Ben R. Ethridge 16
Lizzie Ethridge 12
Mary Ethridge 10
Ella Ethridge 7
Theadore Ethridge 5
Davie Ethridge 1
Eliza Boyd 70