Plot 343 is part of the following land areas:
| 1598 | Terrier to accompany Map of Earls Colne and Colne Priory Manors | 44600608 |
| Friday 19 June 1607 | Harlakenden Account Book | 22600010 |
| Monday 4 April 1608 | Harlakenden Account Book | 22602027 |
| Friday 27 March 1612 | Harlakenden Account Book | 22700124 |
| Tuesday 12 January 1613 | Harlakenden Account Book | 22700453 |
| Tuesday 4 April 1615 | Harlakenden Account Book | 22701175 |
| Tuesday 19 November 1616 | Harlakenden Account Book | 22701724 |
| Thursday 25 June 1618 | Harlakenden Account Book | 22800005 |
| Tuesday 29 June 1619 | Harlakenden Account Book | 22800259 |
| Thursday 12 October 1637 | Earls Colne Manor Court Rolls | 38601221 |
| Tuesday 2 November 1652 | Earls Colne Manor Court Rolls | 39002301 |
| Thursday 3 February 1743 | Maps | 90100020 |
| 1806 | Maps | 90200005 |
| 1838 | Earls Colne Tithe Award | 90000015 |
| 1854 | Rental of the Manors of Earls Colne and Colne Priory | 80000585 |