ONTARIO COUPLEDavid Mandeville Weds Gail T rewett at Mt. BaldyThe marriage of Gail Tre-wett and David Mandeville, both of Ontario, took place April 3 at the Mt. Baldy Community Church of Mt. Baldy.The bride is the daughter of Mr. and Mrs. Robert L. Tre-wett of 933 E, Yale St., Ontario. She graduated from Chaffey High School in 1965, Chaffey College, Alta Loma, and San Jose State College, San Jose.She is employed by West-minster Presbyterian DayCare Center, Ontario.The bridegroom is the son of Mr. and Mrs. Joseph L. Mandeville of 818 Holmes Ave., Ontario. He graduatedfrom Chaffey High School in 1965, and is a student at Chaffey College.Judy Vickery of Alta Loma was the honor attendant. Serving as best man was Kelly , Mandeville of Phoenix, Ariz. Other attendants were Dick Martin and Matthew Mandeville as ushers, and Kimberly Vickery, flower girl.Following the ceremony, a reception was held at the ' home of Mrs. David Vickery, the bride's sister, in Alta Loma.The couple traveled to Lake Istanbul, Ore., and will make a home at 384 N. Ninth Ave.,I TwLlnnsI