The name would not have been familiar even to sports writers in Mumbai until recently.
The basic information about his first-class career is here:
Note that he has a younger brother, also a first-class cricketer, who is living at 87.
Now there is nothing remarkable about his cricket career (except perhaps that he played along with DB Deodhar and Vasant Raiji, the only other Indian f-c cricketers to cross 100).
In June 2020, he became India’s longest-living first class cricketer following the death of Vasant Raiji. Later in 2020 he celebrated his 100th birthday. Following the death of NZ player Alan Burgess in early 2021, Raghunath became the world’s oldest living first-class player.
This article seems to have the most recent picture of him:
This live link gives the list of all first-class players who lived to be over 100:
If he is still living a little more than a year from now he will become India’s longest-living f-c player (after Deodhar). By July 2026, he would have become the oldest such player from all countries, (after John Manners). On the way he would pass the record of N Gordon, the only Test player here who lived to be a little over 103.
He may not be fully aware of his and other’s records, as he has been a patient of Dr Alzheimer for some time. He lives in an old-age home in Mumbai.