A query for HH:
In the NI vernacular poetics, names of some of the meters are derived from region names such as soraThA meter after saurAShTra and mAgadhI meter (same as vaitAlIya of skt.) after magadha etc., as opposed to skt. names of the meters, which have no connection to regions (to my knowledge).
What could be behind such modification of the meter names in proto-hindI vernaculars, especially when there appears to be no evidence of any regional concentration of their usage too?
In the NI vernacular poetics, names of some of the meters are derived from region names such as soraThA meter after saurAShTra and mAgadhI meter (same as vaitAlIya of skt.) after magadha etc., as opposed to skt. names of the meters, which have no connection to regions (to my knowledge).
What could be behind such modification of the meter names in proto-hindI vernaculars, especially when there appears to be no evidence of any regional concentration of their usage too?

