Birth name and music roots

Dudley Stuart John Moore used his full birth names professionally; Moore was not a stage invention. Britannica lists him in full as Dudley Stuart John Moore (Britannica). A gifted pianist and organist, he studied at Guildhall School of Music and won a scholarship to Magdalen College, Oxford, combining classical training with jazz.

Beyond the Fringe, Peter Cook, and Hollywood

Moore rose in the early-1960s satire boom as one of four writer-performers in Beyond the Fringe with Peter Cook, Jonathan Miller, and Alan Bennett. With Cook he made BBC's Not Only... But Also and the film Bedazzled (1967). In Hollywood he starred in 10 (1979) opposite Bo Derek and earned an Oscar nomination for Arthur (1981) (Britannica; official memorial site dudleymoore.com).

He was appointed CBE. In later years he was diagnosed with progressive supranuclear palsy (PSP); he died of pneumonia secondary to the illness on March 27, 2002, and was buried at Hillside Cemetery in Scotch Plains, New Jersey.

Arthur (1981) Blu-ray/DVD 10 (1979) DVD/Blu-ray Beyond the Fringe / Not Only But Also collections

Why the "real name" question matters

Search interest in a celebrity's "real name" usually means one of three things: a shortened everyday form (Tom for Thomas, Dave for David), a middle name used as a stage handle (Drake-style), or a true legal/professional change after immigration or branding. This sprint page states which case applies, cites library or encyclopedia authorities where possible, and avoids gossip. Career sections stay high-level and sourced so Domain Bot can add internal/external links without rewriting the biography. Living subjects are limited to public facts; memorials avoid graphic detail.