What is the name of Sherlock Holmes's brother?

Sherlock Holmes's brother is named Mycroft Holmes. Mycroft is often portrayed as smarter than Sherlock but lacks his brother's enthusiasm for putting his skills into practice. He is a high-ranking government official who possesses considerable power and influence at The Diogenes Club. Mycroft serves as Sherlock's occasional confidant and source of information, sharing his vast knowledge and insights to aid in solving complex cases. Although rarely seen actively participating in detective work, Mycroft is a crucial figure in the Sherlock Holmes canon.