Maria Jane Williams (c.1795 – 10 November 1873) was a 19th-century Welsh musician and folklorist born at Aberpergwm House, Glynneath in Glamorgan, South Wales.
She was the second daughter of Rees Williams (d. 1812) of Aberpergwm in the Vale of Neath, Glamorganshire, by his wife Ann Jenkins of Fforest Ystradfellte.
[2] Maria Jane Williams was well educated, a supporter of the Welsh language and traditions and had an extensive knowledge of music.
[1] In October 1838, at the ensuing Eisteddfod, she won a prize for the best arrangement of any Welsh air for four voices[1] Lucy Broadwood, an ex-president and mentor of the Folk Song Society, and one of the earliest collectors of Celtic folk songs, in a scathing attack on the folklorists of the day, claimed that during the period 1800 to 1850, in Wales, as in the rest of Britain, ‘a mass of "traditional" and so-called "Druidical" songs was published which does not bear critical investigation.’ She claimed, however, that Maria Jane Williams was one of only two people in Britain at this time who were the exception to this rule.
[4] Maria Jane Williams claimed that: ‘The songs were given as...obtained,...in their wild and original state; no embellishments of the melody have been attempted, and the accompanying words are those sung to the airs.’[5] Maria Jane Williams also assisted John Parry to produce the ‘Welsh Harper’ and John Thomas consulted her before publishing his two volumes of Welsh airs.