Question: What was the person called that was known as The Irving of the music halls was also famous for their speech presented by a single character, most often to express their mental thoughts aloud?

Context paragraphs:
Speech production: Speech production is the process by which thoughts are translated into speech.  This includes the selection of words, the organization of relevant grammatical forms, and then the articulation of the resulting sounds by the motor system using the vocal apparatus.  Speech production can be spontaneous such as when a person creates the words of a conversation, reactive such as when they name a picture or read aloud a written word, or imitative, such as in speech repetition.  Speech production is not the same as language production since language can also be produced manually by signs.

George Lashwood: George Lashwood (25 April 1863 - 20 January 1942) was a popular English singer of the Edwardian era, who performed in music halls throughout the country, especially in London's East End and at seaside locations such as Blackpool.  Born Edward George Wright, Lashwood was known as "the Beau Brummell of the music halls".

Posttraumatic stress disorder: Posttraumatic stress disorder (PTSD) is a mental disorder that can develop after a person is exposed to a traumatic event, such as sexual assault, warfare, traffic collisions, or other threats on a person's life.  Symptoms may include disturbing thoughts, feelings, or dreams related to the events, mental or physical distress to trauma-related cues, attempts to avoid trauma-related cues, alterations in how a person thinks and feels, and an increase in the fight-or-flight response.  These symptoms last for more than a month after the event.  Young children are less likely to show distress but instead may express their memories through play.  A person with PTSD is at a higher risk for suicide and intentional self-harm.

Bransby Williams: Bransby Williams (born as Bransby William Pharez) (14 August 1870 – 3 December 1961) was a British actor, comedian and monologist.  He became known as "The Irving of the music halls".

A Time for Choosing: "A Time for Choosing", also known as "The Speech", was a speech presented during the 1964 U.S. presidential election campaign by future president Ronald Reagan on behalf of Republican candidate Barry Goldwater.  The speech launched Reagan into national prominence.

Speech balloon: Speech balloons (also speech bubbles, dialogue balloons or word balloons) are a graphic convention used most commonly in comic books, comics and cartoons to allow words (and much less often, pictures) to be understood as representing the speech or thoughts of a given character in the comic.  There is often a formal distinction between the balloon that indicates thoughts and the one that indicates words spoken aloud: the balloon that conveys thoughts is often referred to as a thought bubble.

Ahmed Mubarak: Ahmed bin Mubarak or Ahmad bin Mubarak is an Arabic given name or a patronymic name, literally "Ahmed, Son of [a person called] Mubarak".  Since the introduction of surname, it also in form of Ahmed Al Mubarak, literally "Ahmed, descendants of [a person called] Mubarak."

Mental block: A mental block is an uncontrollable suppression, or repression of painful or unwanted thoughts/memories.  Also can be an inability to continue or complete a train of thought, as in the case of writer's block.  In the case of writer's block, many find it helpful to take a break and revisit their topic.  Another tactic that is used when people with mental blocks are learning new information is repetition.  A similar phenomenon occurs when one cannot solve a problem in mathematics which one would normally consider simple.  Mental blocks can be caused by physical disabilities or simply a lack of focus.  Mental blocks are also often used to describe a temporary inability to recall a name or other information.  A sudden cessation of speech or a thought process without an immediate observable cause, sometimes considered a consequence of repression.  Mental blocking can be a coping mechanism for mental illnesses such as hysteria, neurosis, and lack of pathology.

Duospaced font: A duospaced font (also called a duospace font) is a fixed-width font whose letters and characters occupy either a single or double amount of a specified, fixed horizontal space.  These dual character widths are also referred to as "half-width" and "full-width", where a full-width character occupies double the width of a half-width character.  This contrasts with variable-width fonts, where the letters and spacings have more than two different widths.  And, unlike monospaced fonts, this means a character can occupy up to two effective character widths instead of a single character width.  This extra horizontal space allows for the accommodation of wider glyphs, such as large ideographs, that cannot reasonably fit into the single character width of strictly uniform, monospaced font.

Monologue: In theatre, a monologue (from Greek: μονόλογος , from μόνος "mónos", "alone, solitary" and λόγος "lógos", "speech") is a speech presented by a single character, most often to express their mental thoughts aloud, though sometimes also to directly address another character or the audience.  Monologues are common across the range of dramatic media (plays, films, etc.), as well as in non-dramatic media such as poetry.  Monologues share much in common with several other literary devices including soliloquies, apostrophes, and aside.  There are, however, distinctions between each of these devices.

Supporting paragraphs: Bransby Williams Monologue
Answer: monologist