Oxhey grew during the mid-19th century with the coming of the London and Birmingham Railway from London Euston to Boxmoor in 1837, the settlement being developed to house railway workers.
It is bounded to the West by a railway line that separates it from South Oxhey, to the East by the A4008 Watford to Harrow Road (Oxhey Lane), to the South by the B4542 (Little Oxhey Lane), Green Belt and the boundary with the London Borough of Harrow and to the North by woodland (Margeholes Wood and Sherwood Wood).
Altham died on 21 February 1617, and the lord keeper, Sir Francis Bacon, in appointing his successor, characterised the late baron as ‘one of the gravest and most reverend of the judges of this kingdom.’ He was buried in Oxhey Chapel, built by himself on his estate at Oxhey in Hertfordshire, where a monument still preserves his memory and that of his third wife, who died on 21 April 1638.
The chapel was built in 1612 by Sir James Altham as a private chapel for his family and staff who lived nearby at Oxhey Place.
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This was paid for by the owner of Oxhey Place at that time, Thomas Blackwell, the co-founder of Crosse & Blackwell, the architect being J.