Hello Verona,
I've had a look at the Sussex Marriage Index, but drawn a blank I'm afraid.
There is no Lucy Hoare coming up beteen 1800 and 1830. The only Rogate connection I could find was Ann Hoar/John Beacher at Rogate 27 April 1812.
The nearest Henry Pollard to your date was married to Jane Cobden at Midhurst in 1811.
Sorry I can't be more helpful,
Regards,
Phil