The Most Rev Bishop Michael Curry, the 27th presiding bishop and primate of the Episcopal Church, will give an address at the wedding in Windsor on May 19.
Curry is the first African-American to have served as presiding bishop of the Episcopal Church, an offshoot of the Church of England in the United States.
Bishop Curry gained notoriety outside of the Episcopal Church with his acclaimed 2012 General Convention address, in which he talked about the world's need for some "crazy Christians".
The Episcopal Church, which is based in NY, provides mission and ministry in the United States and 16 other countries spanning the globe from Austria to Taiwan.
A royal source told PEOPLE the couple and the Archbishop discussed a number of possibilities for a preacher.More news: CBI files 1st charge sheet against Nirav Modi
After the Episcopal Church voted to allow gay marriage in 2015, Archbishop Welby said the decision "will cause distress for some and have ramifications for the Anglican Communion as a whole, as well as for its ecumenical and interfaith resolutions". One particular participant is especially interesting after knowing the royal couple and the mission they've announced for after they're married.
Is there anything else we should know about Bishop Michael Curry? Having an American pastor at a royal wedding is a break from tradition.
Curry, a Bills fan, has been active in issues of social justice and speaking out on immigration policy and marriage equality throughout his ministry.
The bishop previously made waves following the release of his book "Crazy Christians: A Call to Follow Jesus".