These two groups might be related

1746 HOOK Betty Isaac Margaret Bulley
1757 HOOK John Isaac Margaret Churcham
1752 HOOK Esther Isaac Margaret Churcham
1749 HOOKE Nancy Isaac Margaret Churcham

1743 HOOK Richard Isaac Mary Churcham
1741 HOOK Mary Isaac Mary Churcham
1739 HOOK Sarah Isaac Mary Churcham

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Ἀριστοτέλης A Gloster Boy in the Forest of Dean ><((((*>

Using the Advanced Search - just for witnesses - asssume you've found on FOD records a Matthew HOOK/Sarah BROWNING - were witnesses at the wedding of

Giles HOOK - who married Sarah BROBEN - 6 March 1774 Westbury on Severn

Giles HOOK - burial - age 79 - 2 February 1825 c1746 - Westbury on Severn

also

when Richard HOOK married Hannah WADE 31 March 1778 - Lydney, Matthew HOOK/Elizabeth WADE/William DAVIS (witnesses)
? Death at Lydney of a Richard HOOK - 21 April 1820, age 73 - c 1747

and John GOUGH married Sarah BROWNING - 12 November 1774 - Westbury on Severn, Richard HOOK was one of the witnesses, along with Toby COWLES

Giles & Richard (seem to be family names...)

? Giles & Sarah HOOK - are having children at Alvington, including a Richard born 6 Jan 1775)

I have just registered with this site - it's brilliant. I am a direct ancestor of Matthew Hook, born 1749. My grandmother was Sarah Ellen Hook, daughter of Walter Hook and Sarah Heath. Walter was the son of Matthew Hook, born 1815 and Eliza Hodgkins. Matthew was the son of Richard Hook, born 1781 and Esther Pickering and Richard was the son of Matthew Hook, born 1749 and Mary Higgins, nee Taylor. As Matthew was the brother of Richard Hook of Lydney, 1757-1820, who married Hannah Wade, and we know he was the son of Thomas and Mary, I've come to the conclusion Matthew was baptised, or at least appeared in the Taynton parish registers as Thomas, 2 earlier Thomases having died. Thomas Hook married Mary Ratherstone, which I think can be also Rastone, May 22 1743 in Taynton. Thomas is probably either the son of William and Elenor Poydrass/Poythres or of John and Mary (no further info. yet). I'm going by dates and ages in the parish records on this site.

Sorry, now realise I didn't help you with siblings of Richard HOOK, son of Matthew born 1749: His siblings were:
Edwin, born and died 1807,
Charles boen 1809, died 1890,
Ann,born 1811, married William Huxley,
Mary, born 1813, married Richard Seyer Workman 19 June 1834 in Westbury-on-Severn,
James, born 1814, married Mary Tomkins,
Matthew, (my direct ancestor) born 1815, died 1900, married Eliza Hodgkins,William, born 1817.
Hope this helps. Kay