Joel von Ranson and John Edward (Teddy) Sublett are to be married Sept. 20 by Sag Harbor Village Justice Andrea Schiavoni at Wolffer Estate Vineyard in Sagaponack, N.Y.

Joel, 46, is a partner at the executive recruiting firm of Spencer Stuart in New York. A graduate of Northampton High School, he received a bachelor’s degree and a master’s degree in business from the Stern School of Business at New York University. He grew up summering in Oak Bluffs on Martha’s Vineyard.

His mother, Brooks Robards of Northampton and Oak Bluffs, is professor emerita of mass communication at Westfield State University and the author of 14 books, including four books of poetry. Joel’s father, Jonathan von Ranson, is a writer and stonemason in Wendell.

Teddy, 36, is a senior director of women’s design for Ralph Lauren Corporation in New York. He graduated from the University of Western Ontario with a bachelor’s degree and received an associate degree in design and manufacturing at the Fashion Institute of Design & Merchandising in Los Angeles. He is a son of John Sublett and the late Susan Sublett of Thornbury, Ontario, Canada. His mother was an elementary school teacher and homemaker. His father, now retired, is a former banker and boat builder in Thornbury and Toronto, Ontario.

The couple met more than 10 years ago at a garden party in Bridgehampton, N.Y. They divide their time between New York city and Water Mill, N.Y.