The World of Ice and Fire (US, UK) will be released October 28. Editors, please refrain from including information from the book prior to November 27.
From A Wiki of Ice and Fire
Borcas is a steward of the Night's Watch. It seems like he is responsible for stewardship at Eastwatch-by-the-sea.
A Game of Thrones
When Dareon is ordered to Eastwatch, he is told to report to Borcas upon his arrival.
References and Notes