Plot 423a is part of the following land areas:
| Tuesday 28 May 1409 | Earls Colne Manor Court Rolls | 54700201 |
| Thursday 3 March 1418 | Earls Colne Manor Court Rolls | 55400531 |
| Thursday 30 May 1420 | Earls Colne Manor Court Rolls | 55700209 55700418 |
| Monday 26 July 1428 | Earls Colne Manor Court Rolls | 56300696 |
| Saturday 29 September 1431 | Earls Colne Accounts | 47800018 |
| Monday 29 September 1432 | Earls Colne Accounts | 47900020 |
| January 1455 | Earls Colne Rental | 43801465 |
| July 1468 | Earls Colne Rental | 43902013 |
| Tuesday 26 May 1523 | Earls Colne Manor Court Rolls | 61700546 |
| Tuesday 17 May 1524 | Earls Colne Manor Court Rolls | 61800298 |
| Tuesday 6 June 1525 | Earls Colne Manor Court Rolls | 61900244 |
| Tuesday 2 June 1528 | Earls Colne Manor Court Rolls | 62200046 |
| 1533 | Earls Colne Rental | 44000737 |
| Saturday 22 April 1536 | Colne Priory Rental | 43300877 |
| Friday 1 November 1549 | Earls Colne Rental | 44101093 |
| Tuesday 28 January 1550 | Colne Priory Rental | 43401457 |
| Tuesday 16 May 1559 | Earls Colne Manor Court Rolls | 65300519 |
| Thursday 2 April 1562 | Earls Colne Rental | 44200894 |
| Monday 24 September 1565 | Earls Colne Manor Court Rolls | 65500397 |
| Tuesday 1 March 1569 | Wills | 2601264 |
| Monday 1 October 1571 | Earls Colne Manor Court Rolls | 65800496 |
| Friday 23 December 1584 | Earls Colne Rental | 44300863 |
| Thursday 18 September 1589 | Earls Colne Rental | 44400812 |
| Monday 24 July 1592 | Earls Colne Manor Court Rolls | 66901342 |
| 1598 | Terrier to accompany Map of Earls Colne and Colne Priory Manors | 44601714 44601721 44601728 44700596 |
| Wednesday 19 April 1598 | Earls Colne Manor Court Rolls | 67101977 |
| September 1598 | Colne Priory Rental | 43501081 |
| Tuesday 18 February 1606 | Earls Colne Manor Court Rolls | 37301514 |
| March 1615 | Earls Colne and Colne Priory rental | 22200700 22201462 |
| Wednesday 24 March 1624 | Freehold Titles | 31700509 |
| January 1630 | Earls Colne and Colne Priory rental | 22301025 |
| Wednesday 13 June 1632 | Coroner's Inquisition Post Mortem | 12700081 |
| 1636 | Earls Colne Manor: Fine Book | 24003293 |
| Tuesday 3 January 1637 | Earls Colne Manor Court Rolls | 38502502 |
| September 1638 | Earls Colne and Colne Priory rental | 22401292 |
| Wednesday 17 January 1649 | Earls Colne Manor Court Rolls | 38901496 |
| 1650 | Earls Colne Manor: Fine Book | 24100855 24100883 |
| Tuesday 18 June 1650 | Earls Colne Manor Court Rolls | 39000021 39000224 |
| Tuesday 2 November 1652 | Earls Colne Manor Court Rolls | 39002211 |
| 1662 | Earls Colne Manor: Fine Book | 24200038 |
| Wednesday 2 April 1662 | Earls Colne Manor Court Rolls | 39400310 |
| 1664 | Earls Colne Manor: Fine Book | 24200279 |
| Tuesday 12 July 1664 | Earls Colne Manor Court Rolls | 39401652 |
| 1673 | Earls Colne Manor: Fine Book | 24201111 |
| Thursday 16 October 1673 | Earls Colne Manor Court Rolls | 39701551 |
| Thursday 19 February 1674 | Freehold Titles | 27300005 |
| 1678 | Earls Colne Manor: Fine Book | 24201603 |
| Tuesday 19 March 1678 | Earls Colne and Colne Priory rental | 22502941 |
| Monday 28 October 1678 | Earls Colne Manor Court Rolls | 39900309 |
| 1679 | Earls Colne Manor: Fine Book | 24201752 |
| Thursday 16 October 1679 | Earls Colne Manor Court Rolls | 39901173 |
| 1691 | Earls Colne Manor: Fine Book | 24300802 |
| Sunday 31 May 1691 | Earls Colne Manor Court Rolls | 40200661 |
| Thursday 18 February 1697 | Wills | 5200625 |
| 1699 | Earls Colne Manor: Fine Book | 24301552 |
| Wednesday 21 March 1700 | Earls Colne Manor Court Rolls | 40600114 |
| Sunday 1 April 1700 | Freehold Titles | 28900005 |
| Tuesday 8 April 1701 | Earls Colne Manor Court Rolls | 40600699 |
| Monday 20 April 1702 | Earls Colne Manor Court Rolls | 40700168 |
| 1717 | Earls Colne Manor: Fine Book | 24400939 |
| Tuesday 30 April 1717 | Earls Colne Manor Court Rolls | 41200685 |
| Monday 1 January 1739 | Freehold Titles | 31100005 |
| 1830 | Maps | 90300005 |
| 1838 | Earls Colne Tithe Award | 90000295 |
| 1854 | Rental of the Manors of Earls Colne and Colne Priory | 80000320 80000335 80000340 |