Isaac was born in 1713, the son of Peter Cleaver and Catherine Shoemaker of Bristol, Philadelphia County. His father Peter was a farmer and weaver. Isaac grew up there, one of seven children in a Quaker family. In 1737 he married at Abington Meeting Rebecca Iredell, daughter of Thomas and Rebecca Williams. Isaac and Rebecca lived in Cheltenham and had six daughters, four of whom married Tysons.1  Isaac was respected in Abington meeting, though not active. In 1754 he was chosen as overseer.2

Isaac died in 1799. In his will of 1797, he left Rebecca £150 and the income of the estate.3 He left a clock to the oldest daughter Hannah; at her death it was to go to her son Isaac Tyson. He also named his grandson John Tyson, son of Agnes, and three children of his daughter Hannah. He named his daughter Mary and six of her children: Peter, Rynear, Benjamin, Jesse, Mary and Hannah Tyson.4 He died two years later. The inventory of his estate included the household goods of a prosperous farmer, valued at over £1350. The daughters were Hannah, Mary, Rebecca, Rachel, Agnes, Sarah. Only Hannah outlived her father.

Daughters of Isaac and Rebecca:

Hannah or Ann, born 1^st month 1737/38, married in 1759 John Tyson, son of John and Priscilla, at Abington Meeting. She married second Thomas Leech in 1774 at Abington Meeting. He died in 1804 in Upper Dublin. Hannah died after 1797.

Mary, born 1^st month 1739/40, died 1787. In 1760 she married Rynear Tyson, son of Peter and Mary. They lived in Abington and attended Upper Dublin Friends Meeting for worship. In 1774 Abington meeting reported that Rynear Tyson, son of Peter, had been drinking strong liquor to excess and had sued a Friend at law. Testimony was prepared against him and he was apparently disowned.5 Rynear died in 1796. In his will, written in 1793, he named his second wife Elizabeth (about whom nothing is known), children Peter, Rynear, Jacob, Benjamin, Thomas, Jesse, Mary and Hannah.6

Rebecca, born 3^rd month 1742, died 1765, age 19

Rachel, born 1^st month 1744/45, died 1765, probably unmarried

Agnes, born 12^th mo 1746/47, died 1779 at age 31, married in 1766 Joseph Tyson, son of John and Priscilla, the brother of John Tyson who married her sister Hannah. Agnes and Joseph had children Rebecca and John before Agnes’ death in 1779. Joseph later married Agnes Luken.7

Sarah, born 2^nd month 1751, married 12^th mo 1772/73 Isaac Tyson, son of Isaac and Sarah, at Abington Meeting. Sarah and Isaac had a daughter Abigail before Sarah’s death at age 22. Isaac then married Lydia Tomkins and had four children with her.8