Elena and Charles M. Foster, of Westport, have announced the engagement of their daughter, Catherine Elizabeth, to David G. Ellison, son of Frances and David Ellison, of Greenville, S.C.
The future bride is a graduate of the Hopkins School in New Haven and received a bachelor's degree in art history from Middlebury College in 2005. She has worked in the American paintings department of Christie's Inc. in New York City for six years and is an associate vice president.
The future bridegroom graduated from Christ Church Episcopal School in Greenville and received a bachelor's degree in mathematics and economics from Washington & Lee University in 2005. He is a vice president with the private-equity firm Altaris Capital Partners LLC in New York City.
The couple is planning a July wedding at the bride's family's home.