I have a family member called William Kearsley of the same period. What I do know is that he may have been in the Grenadier Gaurds and later was a band master in the Seven Oaks band. Whether they are the same William I do not know. My branch of the family originated from the London area and before that Lancashire not far from the town Kearsley.There are several family members who joined the Army in different regements in London in the 1800's. These I think are possiblly brothers and or Fathers looking at the dates from their accounts books of the time.Any way my William had a son by Rose Kearsley (nee Couzens) Charles William who also severed in the 1st W/W. His son my grandfather Douglas was born in 1918 when he was in Salonica.Douglas had a son John (my father) in 1942 when he was serving in the 2nd W/W. My father and my self appear to the the only generation of Kearsley who have not been in the armed forces since the late 1700's or early 1800's. If this is the same William or you want more info on possible father/brother please let me know.