He was born in Washington DC but raised in England where he attended two famous rugby establishments - Colston's School in Bristol and UWE Hartpury College in Gloucestershire.
While at the former, he was picked up by the Exiles Branch scouting system.
The 25-year-old is Irish-qualified through his paternal grandfather, who was originally from Belfast, and he has represented Ireland at Under-18, Under-19 and Under-21 level.
He lined out as an underage international alongside players such as current Ireland senior squad members Devin Toner, Fergus McFadden and Sean O'Brien.
Commenting on his move to Ulster, Black said: "This is a new and exciting challenge for me. I am at the stage in my career where I'm looking to really push on and I'm really looking forward to playing in the Magners League and Heineken Cup.
"I've watched Ulster this season and been very impressed with how the team is developing and I'm looking forward to being part of that. My goal is to establish myself in the Ulster team and then try to force my way into the Ireland set-up."
He joins up again with Ulster lock Dan Tuohy, whom he played with in the same Ireland Under-21 team. May he do as well as Dan who gained his first Ireland senior cap against the All Blacks last summer, marking his debut with a try.
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