His name is Dr. Muḥammad Muḥsin Khān s/o Muḥi-ud-Dīn bin Aḥmad al-Īsā al-Khoashki al-Jamandi al-Afghāni, and he was born in the year 1345AH in Qaṣûr, a city of the Punjab Province, in Pakistan.
His grandfathers emigrated from Afghanistan escaping from the calamities such as the wars and tribal strifes. He belongs to the famous Afghanese tribe al-Khoashki al-Jamandi. The residence place of his tribe was the valley of Arghastān south east of the city of Kandhār (Afghanistan).
In the city of Kandhār is where he had most of his education, then he continued his education until he gained the Degree in Medicine and Surgery from the University of Punjab, Lahore. Then he worked in the University Hospital in Lahore, after that he travelled to England and stayed there for about four years, where he got the diploma of Chest Diseases from the University of Wales. Then he worked in the Ministry of Health, in the Kingdom of Saudi Arabia. He came during the period of late King ʿAbd al ʿAzīz Ali Sa‘ûd. He stayed in the Ministry of Health for about 15 years, most of that period was in aṭ-Ṭāif, where he worked as the Director of al-Sadād Hospital for the Chest diseases, then he moved to al-Madina, where he worked as a Chief of the Department of Chest Diseases in the King's Hospital, Then lastly, he worked as the Director of the Islāmic University Clinic, al-Madina.
Allāh (سبحانه و تعالى) helped him to translate the meanings of the Aḥādīth of the book Ṣaḥīḥ al-Bukhārī and the book al-Lu’-Lu’-wal Marjān and the meanings of the interpretation of the Noble Qurʾān into the English language.
May Allāh have tremendous mercy on and reward Dr. Muḥammad Muḥsin Khān, and may Allāh bless you, and shukran.
Source : Contents of the biography is extracted from the book, Summarized Ṣaḥīḥ al-Bukhārī Arabic-English published by Darussalam, with minor changes to the original wording.