Francis Lewis was an Episcopalian.
From: B. J. Lossing, Signers of the Declaration of Independence, George F. Cooledge & Brother: New York (1848) [reprinted in Lives of the Signers of the Declaration of Independence, WallBuilder Press: Aledo, Texas (1995)], pages 71-72:
Francis Lewis was born in Wales, in the town of Landaff, in the year 1713. His father was an Episcopal clergyman, his mother was a clergyman's daughter, and Francis was their only child. He was left an orphan when only about five years old, and was taken under the care and protection of a maiden aunt, who watched over him with the apparent solicitude of a mother.From: Robert G. Ferris (editor), Signers of the Declaration: Historic Places Commemorating the Signing of the Declaration of Independence, published by the United States Department of the Interior, National Park Service: Washington, D.C. (revised edition 1975), page 94-96:
Few other signers [of the Declaration of Independence] felt the tragedy of the War for Independence mor directly than Francis Lee, whose wife died as a result of British imprisonment. To further the cause, he also expended a considerable portion of the fortune he had acquired as a merchant.
Lewis was the only child of a minister. He was born in 1713 at Llandaff, Glamorganshire, Wales. Orphaned at an early age and raised by relatives, he studied at Westminster School in London and then took employment with a local firm.
...[In] 1781, at which time he abandoned politics altogether. He lived in retirement with his sons, and died in 1802 at the age of 89 in New York City. He was buried there in an unmarked grave in the yard of Trinity Church [one of New York City's oldest and most famous Episcopalian churches].