Maria Jane Williams (c.1794 – 10 November 1873) was a 19th-century Welsh musician and folklorist born at Aberpergwm House, Glynneath in Glamorgan, South Wales.
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She collaborated with Welsh musicians such as Maria Jane Williams, a noted harpist, vocalist and guitar player and Henry Brinley Richards, a noted composer best known for writing "God Bless the Prince of Wales", and herself produced a Collection of Welsh Airs.