Bloom thinks three times of a chain of barber shops called "Drago's." The business was an actual one, as is almost always the case in Ulysses, and the proprietors did have that name. Adolphe Drago committed suicide in 1897, and in 1904 the shops were owned and operated by his widow. Neither spouse figures in the novel.

John Hunt 2022

Beginning of a story in the 11 August 1897 issue of the Irish Independent.
Source: findmypast.com.

Coroner's 1897 death certificate for Adolphe Drago, "Hair dresser."

Grave monument of Adolphe Drago in the Glasnevin cemetery, with inscription penned by his surviving wife. Source: Senan Molony.

Record from the Irish Jewish Genealogial Society.
Source: www.irishjewishroots.com.