The following bio was found in a Linn County History - date unknown but it was obviously written prior to his death; probably shortly after 1900. George Adam died February 5, 1904.

 
GEORGE A. YEISLEY

More than sixty years ago George A. Yeisley came to Linn County, Iowa, and during this time, which covers nearly the whole span of the county's development from a primitive state to its present flourishing condition, he has been actively interested in its progress. A native of Pennsylvania, he was born in Monroe County (then Northampton County) October 27,1811, a son of John and Saloma (Kemrey) Yeisley also natives of that state and of German descent. When he was 12 years of age the family moved to Ohio, where the father followed farming until his death. The mother died in the same state. In their family were fourteen children, nine sons and five daughters.
George A. Yeisley passed his boyhood and youth in much the usual manner of farmer boys of his day, receiving a good practical education in the common schools. On starting out in life for himself he engaged in chopping wood for 2 years, and then turned his attention to farming. On leaving Ohio he came to Linn County, Iowa, in November 1839 and located in Linn Township near his present home on section 21, where he secured a squatters claim, as the land had not yet come into market. Four years later he bought 160 acres from the government.

Ernest L. Yeisley in a letter to a grandson of David Yeisley, 1st indicates that George purchased this land for $1.25 an acre in 1841 and that his father William B. and David stayed there when they first came from Ohio.

Here he began life in true pioneer style in a log cabin. The region round about was all wild and unimproved, and he watched with interest its development, acre after acre being placed under cultivation until now the county is covered with fine farms, while city and villages have sprung up and all of the conveniences of an advanced civilization have been introduced. Being a man of industry and perseverance, as well as economical and enterprising, Mr. Yeisley prospered in his new home and added to his land possessions from time to time until he owned 530 acres of which were covered with timber. He still retains a farm of 240 acres on section 21, Linn Township, where he makes his home, but is now living a retired life, enjoying the fruits of former toil.
In Ashland County, Ohio, January 5, 1837, Mr. Yeisley was united in marriage with Miss Nancy Deal, who was born in Somerset County, Pennsylvania, December 13, 1818, her parents being Frederick and Catherine (Colfelter) Deal, also natives of that state and of German ancestry. At an early age she accompanied her parents on their removal to Ashland County, Ohio. She died on the old homestead April 15, 1896 and was laid to rest at Mt. Zion church in Linn Grove. She was a quiet unobtrusive and most estimable woman, a good and kind neighbor, a devoted wife and loving mother, and her death was an irreparable loss to her husband and family.
Unto Mr. and Mrs. Yeisley were born ten children, all born on the old homestead in Linn Township with exception of the eldest, whose birth occurred in Ohio. ..... here the bio goes on to discuss each of the children.
Since casting his first presidential vote for Andrew Jackson in 1832, Mr. Yeisley has never failed in his allegiance to the Democratic party and has supported all of its presidential candidates until the fall of 1900, when ill health prevented him from going to the polls. He has served as supervisor of his township, and has filled all of the local offices, being school director in his district for a great many years. In early life he was a Presbyterian in religious belief. He can look back with satisfaction upon a well spent life, in which he has not only acquired a comfortable competence for himself and family through his own well directed efforts, but his career has even been such as to command the respect and confidence of all whom he has come in contact either in business or social life, while his labors as one of the founders of the county justly entitles him to a prominent place in its history.