Williamson studied medicine at Owens College Manchester; he qualified in 1901 and took the DPH in 1911. He was a former officer-in-charge at the Northenden Auxiliary Hospital and was in practice in Northenden in the Manchester suburbs. He was probably the son of Henry Merrill Williamson senior.
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- ReferenceGB 133 MMC/2/WilliamsonHM
- Physical Description1 file
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