“Gaswell house,” is a historic 15th-century property in Brize Norton, Oxfordshire, near the Cotswolds. 
 
Lord Francis Wenman resided at Caswell House, then a grand mansion, possibly owning surrounding lands after the 1485 Battle of Bosworth when properties were seized. The estate’s Wenmans Barn is named for this family, linking it to post-medieval power shifts in the area.
It even has a natural spring on the property  since at least 1485, serving as a vital water source. This feature underscores the estate’s role in a once-larger medieval settlement thats existed around the house.
 
Interesting facts...
Brize Norton folklore, including rumored tunnels from the nearby Manor House to the church (potentially for Catholic escapes during persecution).