Martindale Sidwell
Martindale Sidwell was born in Warwickshire in 1916 and christened John William Martindale, a combination of his father's Christian names and his mother's maiden name. John William senior was an enthusiastic amateur musician, and at the age of seven the young Martindale won a place as a chorister (and pupil in the choir school) at Wells Cathedral. By the time his voice broke he was already a talented organist, having studied at the cathedral with Conrad Eden. At just 16, in 1932, he was appointed cathedral sub-organist.
As with so many of his generation, the Second World War interrupted plans and ambitions. He served with the Royal Engineers, working on south coast defences but was also involved in many risky expeditions across the Channel. In 1944 he married the pianist and harpischordist Barbara Hill, a noted performer herself, later to become Professor of Piano at the Royal College of Music.
Somehow Sidwell managed to maintain a strong wartime connection to music-making in the Midlands, becoming respectively director of music at Warwick School, organist of Holy Trinity Church, Leamington Spa and conductor of the Leamington Spa Choral Society.
These proved the springboard for his achievements at Hampstead Parish Church after the war, when he came to London for organ studies under the highly regarded C.H. Trevor at the Royal Academy of Music.

Unless otherwise stated the narrative on this website is taken from Andrew Green's obituary of Martindale Sidwell published on the 26th of February, 1998.
The Daily Telegraph
The Times