Ashutosh Mukherjee was born on 29 June 1864 at
Bowbazar, Calcutta (today's Kolkata) in a Hindu
Brahmin family. His mother was Jagattarini Devi and father Dr. Ganga Prasad Mukhopadhyaya. His ancestral town was
Jirat in
Hooghly District,
West Bengal. Among his ancestors were several distinguished Sanskrit scholars, including Pandit Ramchandra Tarkalankar, a professor of
nyaya who had been appointed by
Warren Hastings to that chair at the Sanskrit College in Kolkata. Mukherjee's grandfather Biswanath Mukhopadhyaya. His came to Jirat from another village named Digsui, situated also in the Hooghly District and settled down there. Father Ganga Prasad Mukherjee was born in Jirat on 16 December 1836. In November 1879, at the age of fifteen, Mukherjee passed the entrance exam of the
Calcutta University in which he stood second and received a first grade scholarship. In the year 1880, he took admission at the
Presidency College (now Presidency University) in
Kolkata where he met
P.C. Ray,
Mahendranath Roy and Narendranath Dutta, who would later become famous as
Swami Vivekananda. In 1883, Mukherjee topped the BA examination at
Calcutta University to complete a postgraduate degree in mathematics. He was awarded the prestigious Premchand Roychand Fellowship in Mathematics and Physics, Pure and Applied. In 1883
Surendranath Banerjee wrote an article in the newspaper
Bengalee against the orders of the Calcutta High Court and he was arrested in contempt of court. Protests and
hartals erupted across Bengal and other cities, led by a group of students headed by Mukherjee at Calcutta high court. In 1884, he won the Harishchandra Prize for academic achievements, and completed an M.A. with first-class honours in mathematics in 1885. In 1885, he married Jogamaya Devi Bhattacharyya. In 1886, he was awarded a second Masters in Natural Sciences, making him the first student to be awarded a dual degree from Calcutta University. Next, Sir Ashutosh Mukherjee pursued a career in law. He received a
Bachelor of Law degree in 1888 and enrolled as a
vakil of the Calcutta High Court. In 1897, he received a
Doctor of Law (
LL.D.) and became the Tagore Professor of Law at the University of Calcutta. In 1904, he was appointed a
puisne judge of the High Court, and subsequently served as its acting Chief Justice for a couple of years. ==The young mathematician==