In the 1900 US Federal Census for Philadelphia, PA, we find two-year-old Mildred H., daughter of Howard and Caroline Davis, born in Feb 1898, not 1901. They lived next door to her grandparents, William and Hannah Davis, and great-grandmother Sarah Davis.
After attending the 'Friends' School in Philadelphia, Mildred moved to Los Angeles seeking work and became "an American actress who appeared in many of Harold Lloyd's classic silent comedies and eventually became his wife.
On February 10, 1923, she married Harold Lloyd. After their marriage, Lloyd announced that Davis would not appear in any more motion pictures.
She and Harold Lloyd had three children including Gloria Lloyd and Harold Lloyd Jr. Davis was very active in Beverly Hills and as hostess at the Lloyds' estate, Greenacres, where she particularly enjoyed rose gardening. Her brother was actor Jack Davis of Our Gang, later a prominent Beverly Hills physician.
The couple remained very close for their entire life together.
Davis died from a coronary following a series of strokes in Santa Monica, California in 1969" (wikipedia excerpt).
1900 US Federal Census - Philadelphia Ward 15, Philadelphia, Pennsylvania:
Howard B Davis 27
Carrie Davis 25
Mildred H Davis 2
Rebecka Brown 40 [servant]
1910 United States Federal Census - Tacoma Ward 2, Pierce, Washington:
Howard B Davis 36
Carolina Davis 30
Mildred H Davis 11
William W Davis 64
Hannah Davis 59
1920 United States Federal Census - Los Angeles Assembly District 63, Los Angeles, California:
Howard B Davis 45
Carlyne V Davis 43
Mildred Davis 20
John Howard Davis 5
William W Davis 74
Hannah Davis 67
Jane E Graham 47
California County Marriages, 1850-1952:
Name Harold Clayton Lloyd
Event Date 10 Feb 1923
Event Place Los Angeles, California, United States
Father's Name James Darsie Lloyd
Mother's Name Sarah Frazer
Spouse's Name Mildred Hillary Davis
Spouse's Age 21
Spouse's Father's Name Howard Davis
Spouse's Mother's Name Caroline Worts
Witness Gaylord Frazer Lloyd (brother)
Witness Jane Estelle Thompson
Findagrave Memorial # 5456:
Gloria Lloyd (1924–2012)
Marjorie Elizabeth Lloyd (1925–1986)
Harold Lloyd, Jr. (1931–1971)
Forest Lawn Memorial Park (Glendale)
Glendale, Los Angeles County, California, USA
Plot Great Mausoleum, Begonia Corridor
1900, Twelfth Census of the United States, 1900. Washington, D.C.: National Archives and Records Administration, 1900. T623, 1854 rolls.; Census Place: Philadelphia Ward 15, Philadelphia, Pennsylvania; Page: 1; Enumeration District: 0273.
1910, Thirteenth Census of the United States, 1910 (NARA microfilm publication T624, 1,178 rolls). Records of the Bureau of the Census, Record Group 29. National Archives, Washington, D.C.; Census Place: Tacoma Ward 2, Pierce, Washington; Roll: T624_1663; Page: 5B; Enumeration District: 0230; FHL microfilm: 1375676.
1920, Fourteenth Census of the United States, 1920. (NARA microfilm publication T625, 2076 rolls). Records of the Bureau of the Census, Record Group 29. National Archives, Washington, D.C.; Census Place: Los Angeles Assembly District 63, Los Angeles, California; Roll: T625_106; Page: 3A; Enumeration District: 169.
"California, County Marriages, 1850-1952," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K8NS-JZX : 8 December 2017), Mildred Davis in entry for Harold Clayton Lloyd and Mildred Hillary Davis, 10 Feb 1923; citing Los Angeles, California, United States, county courthouses, California; FHL microfilm 2,074,420, (photocopy of original record/license).
California, County Birth and Death Records, 1800-1994," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QGLW-BLS7 : 18 January 2018), Mildred Hillary Davis in entry for Mildred Gloria Lloyd, 21 May 1924; citing Birth, Los Angeles, Los Angeles, California, United States, California State Archives, Sacramento.