Daughter of Benjamin Newton Duke and Sarah Pearson Angier Duke.

Married to Anthony Joseph Drexel Biddle, Jr.

Anthony and Lillian were the parents of:
Mary Jane Duke Biddle Semans
Nicholas Benjamin Duke Biddle
**********************************
1900 United States Federal Census
Name: Mary Duke
Age: 12
Birth Date: Nov 1887
Birthplace: North Carolina
Home in 1900: Durham, Durham, North Carolina
Street: Chapel Hill Street
House Number: 205
Sheet Number: 14
Number of Dwelling in Order of Visitation: 237
Family Number: 264
Race: White
Gender: Female
Relation to Head of House: Daughter
Marital Status: Single
Father's name: Benjamin W Duke
Father's Birthplace: North Carolina
Mother's name: Sarah Duke
Mother's Birthplace: North Carolina
Occupation: At School
Attended School: 10
Can Read: Yes
Can Write: Yes
Can Speak English: Yes
Household Members:
Name Age
Benjamin W Duke 44
Sarah Duke 39
Angier Duke 15
Mary Duke 12
Mary Shartman 50
Mary Lunsford 20

1920 United States Federal Census
Name: Mary D Biddle
Age: 30
Birth Year: abt 1890
Birthplace: North Carolina
Home in 1920: Manhattan Assembly District 15, New York, New York
Street: East 89th Street
Residence Date: 1920
Race: White
Gender: Female
Relation to Head of House: Wife
Marital Status: Married
Spouse's Name: Anthony J Biddle
Father's Birthplace: North Carolina
Mother's Birthplace: North Carolina
Able to Speak English: Yes
Occupation: None
Able to Read: Yes
Able to Write: Yes
Household Members:
Name Age
Anthony J Biddle 26
Mary D Biddle 30
Annie Boylan 33
Gunda Oliver 23
Margaret Sandhorn 16
Mary Mccabe 26
Katherine Flanigan 49
Olof A Carlson 23

1930 United States Federal Census
Name: Mary Biddle
Birth Year: abt 1892
Gender: Female
Race: White
Birthplace: North Carolina
Marital Status: Married
Relation to Head of House: Wife
Homemaker?: Yes
Home in 1930: Manhattan, New York, New York
Street address: FiFTH AVENUE
Block: J see also Sheet 14A, 16A, 16B, 17A, 17B, 18A, 21A 22B 23A 23B 27A, 28A, 28B, 29A
House Number: 1009
Dwelling Number: 98
Family Number: 467
Age at First Marriage: 26
Attended School: No
Able to Read and Write: Yes
Father's Birthplace: North Carolina
Mother's Birthplace: North Carolina
Able to Speak English: Yes
Household Members:
Name Age
Anthony Biddle 33
Mary Biddle 38
Mary Biddle 10
Anthony Biddle 8

North Carolina Death Certificates, 1909-1975
Name: Mary Duke Biddle
Gender: Female
Race: White
Age: 72
Marital status: Divorced
Occupation: Benefactress
Birth Date: 16 Nov 1887
Birth Place: Durham, North Carolina
Death Date: 14 Jun 1960
Death Location: Durham, Durham
Spouse's name: A J D Biddle Jr
Father's name: Benjamin Newton Duke
Mother's name: Sarah Pearson Angier
Residence: Durham, Durham, North Carolina
Cause of death: Ventricular fibrillation due to arteriosclerosis, asthma
Informant: Mrs Mary D B T Semans, 1415 Bivins St, Durham NC