Ah... this poem. One of my favourite, it is a pity no one knows for sure who is the original author.
Some stories behind this poem:
'Do not Stand at my Grave and Weep" was left in an envelope for his parents, to be opened in the event of his death, by a soldier, Stephen Cummins, who was killed on active service in Nothern Ireland at the age of 24, (a mine blew up his armoured car near Londonderry)
The poem was read , on BBC TV on Remembrance Day in 1995, by Stephen Cummins' father. Many assumed at first that the soldier had written it, but later this proved to be false.
The poems origin still remains a mystery but, there are several people that claim authorship including Mary Frye, Gwydion Penderwen, Joyce Fossen, Albert Spengler, etc.
This poem is referred to in the press as "the most requested poem in the English language in the past 60 years" and "the poem that took the nation by storm." It has been read at memorials repeatedly over the years, including that of the five astronauts who died in the Challenger space shuttle disaster. '