Table 1 Collection information of parchment documents analysed in the study (n = number of samples). Collagen quality criteria outlined in the methods section. The artificial collections contain documents of different provenance, while the others have grown organically around a single property.

From: Tracking the British agricultural revolution through the isotopic analysis of dated parchment

Collection

n

Date range (AD)

Collection information

Total

Acceptable collagen quality

Cheshire Records Office

15

15

1786–1813

Artificial collection of deeds concerning property in Cheshire

Campana et al.54

13

9

1730–1830

Artificial collection of various legal documents

Doherty Collection

8

8

1913–1940

Artificial collection of deeds concerning property across England and Wales

Hull History Centre

38

33

1596–1969

Artificial collection of deeds concerning property in the East Riding of Yorkshire

Lee Collection

254

245

1499–1907

Artificial collection of deeds concerning property in England, Wales and Scotland

Lincoln Records Office

9

9

1742–1907

Artificial collection of deeds concerning property in Lincolnshire

Lord Collection

50

48

1582–1893

Title deeds concerning Lower Winskill Farm, Settle, North Yorkshire

Tye Collection

254

253

1650–1904

Artificial collection of deeds concerning property in the City of London. Documents were discarded from the Sun Fire Office, London, company archives

Westminster City Archives

1

1

1707

Title deed from the City of Westminster

Wills Collection

16

14

1652–1790

Title deeds concerning property in Somerset

Total

658

635