After the death of George in 1926, ownership of the arboretum passed to his nephew the fourth Earl of Morley, and eventually to the Forestry Commission in 1956.
Lord Boringdon's grandson Edmund Parker, 2nd Earl of Morley (1810–1864) married in 1842 Harriet Parker (1809–1897), his second cousin and sister and heiress of Montagu E.N. Parker, and Whiteway thus returned into the possession of the senior line of the family when it became in 1897 the inheritance of Hariett's son Albert Edmund Parker, 3rd Earl of Morley (1843–1905).
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