1920 United States Federal Census

Validator (claude-sonnet-5-5, 2026-10-28): consistent, confidence 2/4, tier record.
The image is a readable 1920 census page for Chicago Ward 3, ED 149, sheet 3B. Mary, age 59, appears as wife of George S Wood. The Bentley relatives living with them (brother-in-law William, sister-in-law Caroline, niece Norma) suggest Bentley was her maiden name. The residence, relation, marital status and approximate age fit, but she is enumerated as Wood, so the identification rests on inference.
Matches: Page is Chicago Ward 3, Cook County, Illinois, ED 149, sheet 3B, as cited; Household of George S Wood (head, 62) lists Mary as wife, age 59, married, which gives a birth year of about 1860–61 and fits 1861; Relation (wife) and marital status (married) match the claim; Mary's birthplace and both parents' birthplaces are New York, the same as those of William Bentley (brother-in-law, 50) in the same household, so Bentley may be her maiden name
Flags: The record names her Mary Wood, not Mary W Bentley; the only Bentleys on the page are William, Caroline and Norma, listed as brother-in-law, sister-in-law and niece
Limits: The census gives no middle initial and no maiden name, so the link between Mary Wood and Mary W Bentley is inferred, not stated; The age of 59 gives only an approximate birth year, and nothing here covers her death in 1938; The Bentley relatives in the household support the maiden-name reading but do not prove it