[3][4][5] Chadwick, the eldest of her siblings, lived with her family in Rosser Street, Maesycoed, and attended Pontypridd Intermediate Girls' School.
By 1930, the family had moved to Tel-el-Kebir Road, Hopkinstown, before settling in South Street, Abercynon, four years later, where her mother lived until her death in 1970.
[1][11] In June 1935, at the age of 16, Chadwick won first prize for pipe organ solos at the Urdd Eisteddfod (the Annual Welsh-language youth festival) at Carmarthen.
[7] During the 1950s, while courting her future husband, Leonard Wiles, Chadwick went to view a pipe organ in a Shepherd's Bush pub, in west London.
In 1977, Chadwick, along with Baga, represented women organists at the Odeon, Leicester Square, London, in celebration of the Queen's Silver Jubilee.
[20] The following year, Chadwick became the first woman to perform in concert for The North Wales Organ Society at the Metropole Hotel in Colwyn Bay.
[21] In July 1981, she accompanied Cerys Hughes-Taylor at the Gaumont State Theatre in Hammersmith, to an audience of 3,500 including Prince Charles and Lady Diana.
In April 2007 Chadwick, along with Len Rawle and Kevin Morgan, gave the reopening concert of the Granada Tooting Wurlitzer to an audience of over one thousand.
[24][25] Chadwick married Leonard Wiles (26 January 1908 – 5 November 2006) in 1951 in Ealing, west London, before the couple settled in the north of England in 1952.
[10][28] Nigel Ogden presented a tribute edition of The Organist Entertains devoted to her, which was broadcast on BBC Radio 2 in July 2014.