Alleghany (Y) S-8 POSRegistration of securities for employees (post-effective amendment)

Filed: 6 May 20, 5:00pm

Exhibit 24.1

Power of Attorney

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Weston M. Hicks, his or her true and lawfulattorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities (including his or her capacity as a director and/or officer Alleghany Corporation) to sign any or all amendments (including post-effective amendments) to this registration statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto saidattorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that saidattorney-in-fact and agent, or his substitutes, may lawfully do or cause to be done by virtue hereof.