Thank you for your poem, Azyung, I feel that poems of the North are few and far between.
However, you neglect the few details that are known of the fall of Brand. In Appendix A of the LOTR, ("Durin's Folk") we learn of a conversation with Gandalf and Gimli in Minas Tirith after the War of the Ring.
"... now we hear that Dain has fallen, fighting in Dale again, even while we fought here. I should call that a heavy loss, if it was not a wonder rather that in his great age he could still wield his axe as mightily as they say he did, standing over the body of King Brand before the Gate of Erebor until the darkness fell."
We know from elsewhere that both Thorin Stonehelm and Bard II sent emissaries to the coronation of King Elessar, so these two would both have brought accurate news of what happened. These leaders broke the siege by issuing forth from the Mountain.
All of this suggests that Brand fell at the Gate of Erebor. I love your detail of a Fount of Heroes in Dale, but it does not match the record of LOTR. Perhaps it would be possible to rewrite it so that the place of his fall is the steps leading up to Erebor, and that fitting mention is also made of the fall of his friend and ally, Dain Ironfoot.
Author's Response: Dear Elbragol, Thank you for your review! The writings that we have done are based upon the World of Tolkien, but not the specific events. We actually attempted to take many of the countries and characters and develop our own stories based on the assumption that the basic story is the same. Thanks again, Azyung.