I will take a stab at this but, as always, I defer to Frank Duff as the authority. As the oldest of the five immigrant Strickler brothers, Abraham is the patriarch of the Strickler family in America. It is simply impossible to cover all the details here. Indeed, the first 40 pages of the Forerunners book is essentially a tribute to Abraham and the genealogy that fills the balance of the book is based on the descendants of his children.
The dates of many of the significant life events of Abraham Strickler remain unproven and disputed. Forerunners has Abraham born about 1670 and immigrating about 1700, but both of these figures appear to be much too early. Frank Duff has convincingAbraham b. about 1694, possibly in Switzerland, but very likely in Amsterdam, Netherlands where the migrating Tauffer families appear to have been at the time. There is no proof that Abraham arrived in America before 1717, he first paid taxes, in Lancaster Co. PA, in 1725.
It is assumed that his wife Mary (or Anna Maria) was a Ruffner because Peter Ruffner, Jr. was assigned to administer the will of Abraham.
My records also indicate that Peter, Jr. was the son of Peter Ruffner, Sr., who was also known as Hans Ruffner. I am not certain of my sources of this information on the Ruffners. It appears to have been pieced together from several family trees. Forerunners mentions the will (probated in 1772) of Peter Ruffner, the son of Peter, the pioneer.