Kent
Costin, Costen and Corstin trees are expected to link back to Causton families (see link to Geoff Costin on the main page). Earlier Causton precursors may well be in Surrey or Sussex. Kent is not well developed and in particular wills have not been much explored.
| Researcher | Top of Tree | ID Numbers in Tree | Notes | ||
| Alison Wright Cyril Holliday Matthew Maytum Valerie Conner Stephen Walton |
John Costin | 4453 | 1606-11, 4453-4481, 4557-4638 | ||
| Heather Abrams | Jacob Costen | 4639 | 4639-4641 | ||
| David Petley-Jones | Robert Cawston | 4677 | 4677-4680 | ||
| Charles & Joyce Davis | Jane Costin | 4691 | 4691-2 | ||
| Ken Costin Wendy Adkins |
Henry Corstin | 4693 | 1120, 1132, 1320, 1440-1, 1586, 1603-5, 2517-2558, 4642-4676, 4693-4 | ||
| Brian Causton | Abraham Causton/Coston | 18C | 4862 | 4862-4878, 6307, 6428, 7343 | |
| George Costen | 18C | 7161 | 7161-7224 | Aylesford Burham | |
| James Causton /Costen | 18C | 7534 | 7534, 7936-7994 | Rainham, Gillingham, Murston | |
| Joseph Henry Caston | 19C | 7539 | 7539-7546 | ||
| Geoff Clark | John Costine | 17C | 8007 | 2604-2686, 7996-8001, 8007-8062 | Bromley |
| Geoff Clark | John Costin | 18C | 8063 | 8063-8071 | Bromley |
| William Causton | 15 C | 8090 | 5123, 7123-60, 8076-8102, 8121-8126, 8322-5 | Oxted, Shoreham | |
| Robert Caustin | 16C | 8103 | 8103-8133 | Shoreham | |