A little late , Lt Col Arthur Sykes (hon) was my gg uncle . He joined the Suffolks in1887 and served in India where he met and married Marrion Milligan , I believe this is when he transferred to the Royal Irish Fusiliers his brother Ernest also transferred from the Suffolks to serve with his brother .
It was Ernest who visited Colour Sergeant Hayes to point out the error of his ways as Arthur was overseas after this Colour Sergeant Hayes deserted.
Arthur had two sons from the marriage one of which was KIA in 1916 fighting with the Canadians the other son I cannot find but I believe he was in North America?
Hope this adds a little to your story.
Mark