[4] The site of a late Iron Age settlement was found west of the cremation pits and just east of the trackbed of the former Great Central Main Line railway.

[5] The settlement consisted originally of a number of roundhouses packed close together in a straight line, and then developed in phases with later structures overlapping the sites of some of the earlier ones.

[6] Iron Age pottery recovered from the site suggests that the settlement was occupied in phases from the 4th to the 1st century BC.

[7] The site is about 0.8 miles (1.3 km) from the course of the Roman road that linked Alchester near Bicester with Lactodurum (now Towcester), which runs through the eastern side of Finmere village.

Before and after the Norman Conquest of England Wulfward the White, a thegn of King Edward the Confessor's Queen Edith, owned the Manor of Finmere.

The earliest surviving parts of the present Church of England parish church of St Michael and All Angels are the tower, the north wall of the chancel and the Decorated Gothic windows in the chancel and the south wall of the nave.

Street removed the west gallery, restored the church, widened the chancel arch and added the north aisle.

[8] The architectural historians Sir Nikolaus Pevsner and Jennifer Sherwood criticised Street's alterations for being "too aggressive" and dominating the rest of the building.

[8][12] Dr James Clarke of Finmere House designed the escapement and paid the £10 cost of reinstallation, which was done by William Bayliss,[12] the village carpenter.

The village continued to have a mill on the Great Ouse until early in the 19th century, when Richard Temple-Grenville, 1st Duke of Buckingham and Chandos had it demolished.

[8] In 1645 during the English Civil War a Parliamentarian force from Newport Pagnell surprised a platoon of eighteen Royalists stationed in Finmere.

In 1847–50 the Buckinghamshire Railway built a branch line to Banbury Merton Street through the northern part of the parish along the Great Ouse Valley.

Fulwell & Westbury station was built on the line about 1.5 miles (2.4 km) northwest of the village.

They were eventually withdrawn from this role as well and from January 1944 the training unit at RAF Finmere flew de Havilland Mosquitoes.

Initially Buckinghamshire County Council opposed the market and had the operators convicted and fined for breaking the Shops Act 1950 that forbade most forms of retailing in England and Wales on Sundays.

It was speculated that the plane was attempting to make an emergency landing at the disused airfield at Finmere.