William Ockelford Oldman (1879-1949) was a specialist dealer in ethnographical objects and arms and armour; he traded as 'Savage Art' during the 1920s. He amassed an extensive collection of ethnographic artefacts, which was eventually sold to the Government of New Zealand for £44,000 in 1948, just before his death. Oldman traded from his home at Brixton Hill, London, before moving to Clapham Park, London in the early 1930s.
See - Waterfield, Hermione, and King, J.C.H., Provenance, Twelve Collectors of Ethnographic Art in England 1760-1990, (PHP, 2009), pp.65-77.