I am not researching this family, but thought this information might be useful for someone. It is from the 1886 book "History of the Susquehanna & Juniata Valleys" - page 929 (Perry County, Pa section)
"Dr. Joseph Eby came to Newport in 1860. He had previously practice in Millerstown. He was a son of John and Elizabeth Eby, and was born near New Germantown November 4, 1830. He studied medicine under Dr. Samuel Eby, of Mount Joy, Lancaster County, and received his professional degree from the Eclectic Medical college, Philadelphia. He married a duaghter of Dr. Jonas Ickes, of Bloomfield, in 1851, by whom he had 2 children, - a son and a daughter. The former died when 4 years old, and the latter married Mr. Gibson Fickes of Newport and still resides there. Dr. Eby died March 11, 1872."