Surrey
Many of these trees are quite early and need to be considered along with events in Sussex and Kent. This county is poorly developed with little work done on wills and parish registers. Coston and Costen are likely to be Causton connected (like Kent).
| Researcher | Top of Tree | ID Numbers in Tree | Notes | |||
| Susan Pocknell, genesconnect | Joseph Costen | 18C | 7882 | SRY | 7882-7917 | Clapham |
| Sue Ault | William Coston | 17C | 5234 | SRY | 5234-9 | Godalming |
| Catherine Cawston | 16C | 5281 | SRY | 5278-5286 | Oxted | |
| Richard Causton | 18C | 7851 | SRY | 5690-5692, 7848-51 | Lambeth. Printer's link? | |
| Ruth Causton | 17C | 5856 | SRY | 5850-61 | Cheam | |
| --- Causton | 17C | 6529 | SRY | 6429-6533 | Bostock-Fuller connection | |
| William Causton | 17C | 7129 | SRY | 7129-7144, 8313-6 | Oxted | |
| Philip Cawston | 18C | 8134 | SRY | 8134-7 | Kingston | |
| Pat Barsby | Henry Cawston | Abt 1790 | 4482 | SRY | 4442-4446, 4482-4509, 4450-3, 6287-90, 7308-27, 7342, 8200-2 | Lambeth |
| Martha Mason | John Costen | 1597 | 4681 | SRY | 4681-4684 | Godalming |
| Alan Goff Sue Ault |
John Costen | Abt 1710 | 1617 | SRY | 1617-1619, 1621, 1625-8, 4447-3352, 5831-3 | Godalming |