Welcome to Rootschat Marghohn.
FreeREG has the 1822 Marriage, unfortunately no witnesses named.
There appears to be no other Standen records in High Halden on there.
There is this Marriage St Mary the Virgin, High Halden
10 July 1794, William BOOTS to Margaret BOURNE
Parents for Thomas?
Did Thomas/Mary Baptise children, St Margaret Bethersden?
Mass Baptism 21 Nov 1830***;
CHARLOTTE, birth 23 Feb 1824
THOMAS, birth 26 Dec 1827
CHARLES, birth 6 Sept 1828
WILLIAM, no birth date shown
( On FreeREG, Parents THOMAS/MARY, Occp Labourer)
Familysearch has these other Children Baptised to Thomas/Mary in Bethersden;
JOHN and FREDERICK, 9 Oct 1833
MARY, 6 January 1836
It helps to have all Childrens names as Families often have a naming pattern.
There is a THOMAS Boots christened 7 February 1799, High Halden, Kent to WILLIAM/MARGARET
(F/S.Org)
Now to Mary, there are at least 15 possible Baptisms in Kent 1707-1803 for her on F/S..
Bit of a nightmare.
There are possibles in Goudhurst 1796/1797/1803
There reason I singled these out is there is this christening there;
Thomas BOOTS, 22 November 1825, Goudhurst, Kent to Thomas/Mary.
Often Woman went Home to have their 1st child.
If correct this Thomas must have died as the have another 1827.
Just my thoughts, others may come up with other ideas for you
