The Burngreave burials (and others) are on this site. Look over to the links in the column on the left hand side and select "Burial Records"
THOMPSON, George (, age 37).
Died at Sheffield Union; Buried on March 21, 1898 in Consecrated ground;
Grave Number 39, Section G6 of Burngreave Cemetery, Sheffield.
Parent or Next of Kin if Available: . Remarks: 19062 Attending Minister: B L Parkin.
Plot Owner: of . Page No
OK. They do seem to be elusive but two heads are better than one. I hadn’t picked up his age at marriage so that helps.
I can’t see any other children born to George and Sarah other than Harriet and then a younger brother two years later so maybe George (father) died just after the birth of his son - and preventing a larger family.