Richey was ordained as a deacon on May 23, 1869, at the
Church of the Transfiguration in New York by Bishop
Horatio Potter and on September 17 of that year was received into the
Episcopal Diocese of Albany. Richey was ordained priest on December 18, 1869, by
William Croswell Doane, bishop of the Episcopal Diocese of Albany, and a day later was installed as rector of the congregation that is now
St. John's, Delhi in that diocese. Bishop Doane later described Richey as “the best theologian he knew”. Soon after, Richey became one of the clergy of the
Church of the Advent in Boston, of which the rector,
Charles Chapman Grafton, was a co-founder of the
Society of St. John the Evangelist, a high-church
Anglican religious order also known as the Cowley Fathers. In 1872,
Alfred Allen Paul Curtis resigned his position as rector of
Mount Calvary Church in Baltimore so that he might enter the Roman Catholic Church. Bishop
William Rollinson Whittingham, the bishop of the
Episcopal Diocese of Maryland and whose family parish Mount Calvary was, asked Richey to become rector. Richey accepted, and thus became the seventh rector of Mount Calvary, on the condition that he should be accompanied by his friend from seminary days, the "zealous ritualist" Rev. Calbraith Bourn Perry. to establish a community and "to do Mission work in Mount Calvary parish." Richey helped found a daughter church for Baltimore's African-American community, Saint Mary the Virgin, which was established in 1873. Eight years later, it was the largest African-American Episcopalian parish in the country and "became the church of Baltimore's aristocrats of color." Richey, together with the parishioners of Mount Calvary and the All Saints Sisters, also founded the All Saints School (described as "the darling wish of his heart" for he was "very energetic in church work." The work done by Richey and Perry with the African American poor of Baltimore was reported in a book by Perry,
Twelve Years Among the Colored People, a Record of the Work of Mount Calvary Chapel of S. Mary the Virgin, Baltimore. == Death ==