Photograph courtesy of
Dave Komarnicki,
Chester, PA

(A biographical sketch taken from One Hundred Years, The Delaware County National Bank Chester, PA 1814-1914)

David Trainer (1864, '67-'77, '81-'90; third president Delaware County National Bank), son of David and Mary (Newlin) Trainer, was born at what is now Trainer, Delaware county, July 9, 1814. During his entire lifetime he resided upon the homestead estate. His mother, Mary Newlin, was one of the bridesmaids at the wedding of Dolly Payne to James Madison, subsequently the fourth President of the United States. In 1837, David Trainer, in association with John Haistings, Jr., changed the old Price Grist Mill, then owned by the elder Trainer, into a cotton factory. In 1842, owing to the failure of their commission house, the firm became seriously involved; the partnership was dissolved and David Trainer assumed the responsibilities of the firm's indebtedness, determined to succeed, and ultimately he achieved his purpose, becoming one of the wealthiest men in the county of that day. Mr. Trainer was elected president of The Delaware County National Bank January 26, 1874, serving until January 25, 1875. David Trainer was for many years a warden of St. Martin's Protestant Episcopal Church, Marcus Hook. He died April 7, 1890, aged 75 years. 

[Obituary]