Hi Mand
Extracts from Combe St Nicholas Parish Registers:
Marriage
05 Jun 1827 John COATE (x) Bachelor otp
No. 96 Elizabeth COLES (x) Spinster otp
by Banns Witnesses: William FOWLER[?] (sgd); Elizabeth LINTELL (x)
Baptism
25 May 1828 Mary COATE dau John/Betsy
Burial
19 Nov 1828 Elizabeth COATE aged 22
Marriage
01 Oct 1834 John COATE (x) otp Widow [sic] (x)
No. 156 Eve NEWTON (x) otp Spinster
by Banns Witnesses: Nicholas NEWTON (x); John POPE (sgd) [a regular witness]
Burial
[ - ] Nov 1864 John COATE of Halterway aged 64 Ceremony performed by Hans F Hamilton Vicar
No. 307
There is no record of a burial for Eve COAT[E] aged 53 in the CSN Register in the June Quarter 1867 but there is ‘Ann’ COATE - 26 May 1867 - aged 53 years for whom there is no GRO reference.
Marriages
04 Feb 1858 John SATURLEY (x) 22 Bachelor Labr of Weston Farm son of William Saturley Labr
after Banns Elizabeth COAT (x) 21 Spinster Glover of Halterway dau of John COAT Labourer
No. 150 Witnesses: Henry[?] COAT (x); Jane COAT (sgd)
07 Apr 1861 Edmund NORTH (sgd) 23 Bachelor Carter of Halterway son of John NORTH Labourer
after Banns Jane COAT (sgd) 19 Spinster Glover of Halterway dau of John COAT Labourer
No. 169 Witnesses: John SATURLEY (x); Elizabeth COAT (x)
24 Jul 1866 John FAHING (x) 24 Bachelor Gardener of Sticklepath son of Charles FAHING Labourer
after Banns Susan COATE (sgd) 19 Spinster of Combe dau of John COATE Labourer
No. 210 Witnesses: [1st illegible]; Mary COATE (x)
[GRO Index surname FUPING – PR has the first letter formed ‘F’ as in Vicar’s signature but if I screw my eyes at it I can see
PEEPING!!.]
I may have solved the mystery of the surname: see Census 1911 Susan PIPPIN born Combe St Nicholas; and Census 1871 Susan PIPPEN born Chard [often recorded by CSN folk when elsewhere].
Early marriages of COAT variants at CSN:
05 Dec 1799 Henry COAT (sgd) both otp
by Banns Mary BAULCH (x)
No 68 Witnesses: William BAULCH (sgd); Sam PYKE (sgd)
Burial 19 Oct 1800 Mary wife of Henry COAT
01 Dec 1801 Henry COAT (sgd) both otp
by Banns Ann BAULCH (x)
No. [blank] Witnesses: William BAULCH (sgd); Sam PYKE (sgd)
Baptisms
25 Jul 1802 John, Son of Mary & Henry COAT
25 Jul 1802 William, Son of Henry & Ann COAT
That should keep you occupied for a while!

John & Eve had more children than you've listed, but they are recorded variously COATE or COAT, so I will need to amalgamate them and ensure I attribute the correct surname spelling for each.
I'll leave the NORTHs for another day!