Manfield was born in
the Bronx, New York City, and graduated from
Harvard University in 1965. After serving in the Army, he earned a master's degree from the
University of Virginia in 1972. Manfield was employed at the
Federal Trade Commission and later became the head of a company called Binary Traders Inc. Manfield partnered with Wellens during their marriage from 1980 to 1985. In
The New York Times in 1983,
Alan Truscott praised their performance along with pair Bob Fiske and Mickie Kivel, calling it, "Perhaps the best performance ever in New York by a team consisting of two mixed pairs." He later remarried and died in 1999 of a heart attack at his home in
Philadelphia. He was survived by his wife Melanie, their two children,
Seth Manfield, a champion
Magic: the Gathering player, and Sabrina, and his daughter from a previous marriage, Karen. He was inducted into the
ACBL Hall of Fame in 2003. ==Bridge accomplishments==