Question: Who was the Army Reserve where Lovell General Hospital was located at named after?

Context paragraphs:
Fort Devens: Fort Devens is a United States Army Reserve military installation in the towns of Ayer and Shirley, in Middlesex County and Harvard in Worcester County in the U.S. state of Massachusetts.  It was named after jurist and Civil War general Charles Devens.  The nearby Devens Reserve Forces Training Area is located in Lancaster.  Although closed in 1996, the fort was reopened the next day as the Devens Reserve Forces Training Area.  The name reverted to Fort Devens in May 2007.

Army Reserve Sustainment Command: The Army Reserve Sustainment Command (ARSC) is a subordinate command of the 377th Theater Sustainment Command.  The Army Reserve Sustainment Command is located in Birmingham, Alabama.  The command comprises five subordinate commands and has command and control of almost 750 Army Reserve Soldiers throughout the United States.  The United States Army Reserve Sustainment Command provides trained and ready Soldiers on a continuous and global basis to U.S. Army Materiel Command (AMC), the Assistant Secretary of the Army for Acquisition, Logistics and Technology (ASA(ALT)), the Defense Contract Management Agency (DCMA) and the Logistics Civil Augmentation Program (LOGCAP) in order to sustain Unified Land Operations.

Rochester General Hospital: Rochester General Hospital, an affiliate hospital of Rochester Regional Health, is a 528-bed tertiary care hospital, located in Rochester, New York.  Rochester General Hospital has been serving the residents of the Rochester Region and beyond since 1847.  Rochester General Hospital offers primary medical care and a broad range of specialties.  Rochester General Hospital’s medical staff includes over 1,000 primary care physicians and specialists, many of whom have offices at the hospital and throughout the community.

Lovell General Hospital East: The Lovell General Hospital East is a former hospital at Fort Devens.  It was named after the first Surgeon General of the United States Army, Joseph Lovell.  After its closure, it was redeveloped into the United States Army Intelligence School.

Lovell General Hospital (Rhode Island): Lovell General Hospital was a United States Army hospital in Portsmouth, Rhode Island which was active during the American Civil War from 1862 to 1865.

Lovell General Hospital South: The Lovell General Hospital South is a former hospital at Fort Devens.  It was named after the first Surgeon General of the United States Army, Joseph Lovell.

Chinese General Hospital Colleges: The Chinese General Hospital Colleges(Formerly Known as Chinese General Hospital College of Nursing and Liberal Arts) was established in 1921 as the Chinese General Hospital School of Nursing (CGHSN).  The idea was conceived by Dr. Jose Tee Han Kee, who was the Director of the Chinese General Hospital.  With him were three physicians who organized the training school.  The Sisters of the Immaculate Conception based in Hong Kong and Canton, China were requested by Dr. Tee Han Kee to help in starting the school.  The first batch of five sisters arrived in August 1921.  Mrs. Praxedes Co Tui, a registered nurse from the Philippine General Hospital was appointed as Chief Nurse and Principal of the School of Nursing.

Lovell General Hospital North: The Lovell General Hospital North is a former hospital at Fort Devens.  It was named after the first Surgeon General of the United States Army, Joseph Lovell.

Office of the Chief, Army Reserve: The Office of the Chief, Army Reserve (OCAR) is located at Fort Belvoir, VA, and provides the Chief, Army Reserve (CAR) with a staff of functional advisors who develop and execute Army Reserve plans, policies and programs, plus administer Army Reserve personnel, operations and funding.  The CAR is responsible for plans, policies and programs affecting all Army Reserve Soldiers, including those who report directly to the Army.  OCAR is made up of specialized groups that advise and support the CAR on a wide variety of issues.

Permanent staff instructor: A permanent staff instructor (PSI) is a warrant officer class 2 (WO2), or senior non-commissioned officer (sergeant, staff sergeant or colour sergeant), of the Regular British Army who has been selected to instruct Army Reserve soldiers.  Each AR unit has several PSIs attached to it.  A normal rifle company in a Regular Army battalion has a single WO2, serving in the role of company sergeant major (CSM).  An Army Reserve rifle company normally has two WO2s.  One is the CSM, normally a part-time member of the Army Reserve, and the other is the seconded PSI, the only full-time member of the company.  The PSI is meant to provide the reserve company with the benefit of his professional experience, as well as to ensure that the training and operation of the company adheres to the Army's methods and standards.  The PSI is typically responsible for much of the company's administration work, and usually takes a particular role in the training of junior NCOs (corporals and lance-corporals, and equivalent).

Supporting paragraphs: Lovell General Hospital East Fort Devens
Answer: Charles Devens