World War 1 British Soldiers Gift Box

"The box was used by my grandfather to store his "IRA medal" for volunteering in the War of Independence. But he never served with British Forces, so we don't know where he came by the little box. We have found out that these boxes were sent to British soldiers fighting at the front at Christmas 1914, from the Princess "M" (Margaret?). They typically contained sweets, cigarettes, toiletries, playing cards, in I guess, an effort to boost morale during the war. What we don't know is How our grandfather came to possess it. We're also struck by the irony of storing his IRA medal in it - which he didn't receive until 1955 following protracted communications. He was Denis Mullins, a carpenter from Rathgormack, Co. Waterford, who subsequently moved to Stradbally, Co.Waterford, when he married our grandmother, Hannah Walsh, where he worked for, and became good friends with Lord William (Bill) Beresford, owner of Woodhouse Estate, where Denis and Hannah lived in 1930's and 40s. Did Lord Bill, who had fought in WW1, give it to him, or did he "retrieve" it from a Blank & Tan ??? We cannot ask him as, sadly, he died in 1972, "