Born to a family of minor nobility from Gondor. His father settled in lands west of the Gap of Rohan and created a lucrative merchanting business. A young Morguinness was soon plied into the trade as well, but found it tedious.
While fishing on the River Isen, he was captured by a scouting party of pirates and taken to their base in Umbar. At first the pirates considered ransoming him, but he simply refused to leave. Their lifestyle appealed to him, as did their manner of doing "business". He spent several years with them, and then returned home.
However, on his way back to his father's lands he encountered an entire company of Orcs about to do battle with Araduin and Bram. He proclaimed that he would join the Orc's side because otherwise it would simply be unfair. At this moment, a three-way battle ensued between Araduin and Bram, the Orcs, and Morguinness.
Finally, after two days of continuous fighting, and all the Orcs long dead, the three decided to settle the dispute over a few kegs of rum that Morguinness had conveniently carried in his saddle bags. And thus began The Fellowship.