Hedley was born in Cottesmore, and was one of eight children of Henry and Mary Hollis; the Hollis family still lives in the village. The 1881 census showed Hedley to be in South Leith, Edinburgh, unmarried, and a soldier at Piershill Barracks.
I couldn't find a report of his death in the Grantham and Stamford newspapers, and he's not recorded on the Rutland county memorial (unveiled November 1904), so the news of his death may not have been widely reported and to have taken some time to reach Cottesmore. The gravestone looks as though it may have been made to commemorate only Hedley and his father - none of his seven siblings or his mother are named on it.
BORN JANUARY 12, 1824,
DIED DECEMBER 15, 1897,
ALSO OF HEDLEY,
SON OF THE ABOVE
BORN MARCH 1, 1859,
WHO SERVED WITH THE B.S.A. POLICE,
WAS AT THE RELIEF OF MAFEKING,
AND DIED IN HOSPITAL AT SALISBURY,
SOUTH AFRICA, FEB. 18, 1901.
HE HATH MADE HIM TO BE SIN
FOR US, WHO KNEW NO SIN,
THAT WE MIGHT BE MADE THE
RIGHTEOUSNESS OF GOD IN HIM.
CORINTHIANS, CHAP. V, VERSE 21.
According to the Kaplan roll, "1001 Tpr. H. Hollis" served with the Mashonaland Division of the BSAP and his QSA bore the clasps Relief of Mafeking, Transvaal, Rhodesia and South Africa 1901. Marginal remark is "Died in Salisbury". He is not recorded in Palmer/SAFF so it appears he had left the service prior to his death.