I looked into this family a while ago for a friend.
Niel Fergusson was born in 1852 in Aberfeldy and died in 1945 in Aberfeldy, Perthshire. He was a soldier in his early life and met and married Rose Anna Spree (1856-1912), the widow of a fellow soldier, James Lawrence, in Bengal India in 1879. His less than distinguished military record is available at the National Archives at Kew. They had ten children, 4 of whom survived, Albert Edward 1885 b. Hounslow, England, George Victor 1887, b. Glasgow, Robert Lennord 1889 b. Edinburgh and Margaret Betsey 1991 b. Pitlochry. The other six are those mentioned on the gravestone - Frederick, John 1893-93 b. Perth, Peter James 1893-93, b. Moulin, Duncan 1894-98 b. Moulin, Neil 1895-95 b. Moulin and Rose Anna 1896-97 b. Moulin. I couldn't find a birth or death for Frederick. It is possible he was their first child and born in India. There is a 6 year gap between the marriage and the birth of Albert Edward. There is a 1901 and 1911 census available for them.
Niel Fergusson was the son of:
John Fergusson b. 1822 in Weem, Perthshire and Margaret MacKay 1811-1880, d. Dull, Perthshire (married 1846 Weem).
who was the son of:
John Fergusson b. 1778 in Weem, Perthshire and Isabell Robertson (married in 1819, Weem)
who was the son of:
William Fergusson and Janet Carmichael
ScotlandsPeople have Old Parish Records for all the aforementioned births and marriages.
And that is all I have! Happy hunting.