Hello Paul
Boyd's index appears to have omitted the marriage of William Hawes and Mary Debenham at Bardwell in 1723, perhaps wrongly transcribing both the bridegroom's surname and the location to create the spurious Haverhill entry.
Percival Boyd (1868-1955) began his work in the 1920s, taking data from transcripts available at that time (not necessarily published). As noted in
A List of Parishes in Boyd's Marriage Index (Society of Genealogists, 1974, p. iv), "no attempt was made to search the original sources - copies were used always. ... Some errors and omissions probably have been made by Mr. Boyd's staff and by the compilers of the materials that he used."
Like the
FamilySearch Research Wiki, that booklet gives Boyd's index a coverage of 1538-1837 for marriages at Bardwell. Those after 1650 can now be found in the
IGI and in the Suffolk Family History Society's
Suffolk Marriage Index, confirming the name of William Hawes.
Images of some (fewer than half) the original Suffolk volumes of pages typed from Boyd's index slips are accessible at the
Internet Archive, with file names ranging from boydsmarriageind19boyd (Men 1676-1700 A-K) to boydsmarriageind39boyd (Women 1801-1880s [but mostly pre-1837] A-K).
Women 1701-1725 A-K are in boydsmarriageind25boyd, which includes Mary Debenham's wedding with William "Havers" at "Haverhill" in 1723 (
page 156) and, for example, Susan Green's with William Herbert at Bardwell in 1720 (
page 238) but apparently no Debenham-Hawes marriage.
David