If the Rob. Seabrooke of Tring, Herts. ymn. in 1695 is the same person as in 1680 (not certain), then he can't be the same as in South Carolina. There were many Seabrookes in this area of Beds, Bucks and Herts.
Here is a will of Robert Seabrooke, yeoman of Tring, 1660. I haven't checked this, possibly the father of the the one in 1695.
https://discovery.nationalarchives.gov.uk/details/r/D6578593Edit
From the will:
Thomas Seabrook, second son
Son Robert
Wife Anne Seabrooke
Son Robert Seabrooke sole executor
Some related wills at Tring, from Herts Names Online:
Robert Seabrooke 1667 Tring Wilstone yeoman filed will inventory 119HW46
Robert Seabrooke 1667 Tring Wilstone yeoman registered will 5HR68
Thomas Seabrooke 1670 Tring Wilstone yeoman filed will bond inventory 119HW66
These are at Hertford.
The two Roberts are probably the same. These are probably the sons mentioned by Robert in 1660.