Daughter of the British general Charles Harris Blunt, she spent her first thirty years in India.
She then moved to Adderbury in Oxfordshire where she became interested in local folk traditions.
Morris dance was common in the area in the early 19th century but had disappeared by the late 1880s.
It was revived in 1974 from the extensive notes made by Janet Blunt and Cecil Sharp in 1916 and 1918.
The village of Adderbury commemorates Janet Blunt every year as part of its annual Morris festivities, and a blue plaque was installed at Le Hall Place in Adderbury in 2009.