>Do by any chance have any information on a Lewis Aikey who ended up in Union County Pa?
I have a sneaky suspicion that your family is not closely related. The major ACHE lines are as follows...
Branch # 1 - early (pre 1748) settlers to Lancaster Co, Pa. the oldest surviving tombstone is for Johannes Ache (1702-1763) buried at the Swamp Reformed Church in Cocalico. He is somehow related to Johann Heinrich (d 1786)(Reistville, Lebanon, Co), George (d 1802) (Cocalico), Johannes* (Tuplehocken, Berks Co - then Paxtang Twp, Lebanon Co, on through Maryland to Fayette Co, Pa) and another Heinrich (Manheim Twp, now Schyukill Co.) (d. approx 1800).
Johann Heinrich Ache/Aughey (1759-1838) the eldest son of Johannes Ache (Tuplehocken, etc). He eventually settled Juniata Co, Pa..... but his offspring are well documented, and not your ancestor.
* this Johannes is often referred to as John Lewis Achey, but this seems to be wishful thinking in trying to tie him to the immigration roster aboard the Halifax.
Branch # 2 - three ACHE "brothers" arrive on the Halifax in Sept. 1752. J. Ludwig is a schoolteacher in Limerick, Pa. and dies young (line peters out from here), Hermannus (1724-1815) does well in land speculation and owns several farms in Montgomery Co. , J. Jacob is an itinerant miller - his children familiy moved on through the Shenandoah Valley of Va. to eventually settle near Springboro, Ohio. No offspring from this line match with your Lewis.
I trace to Hermannus through his son Ludwig (the one on the 1790 census) but this line is well documented - and the family settled in Hellertown, Pa (near Bethlehem)
Hope this helps
He was born in 1789, and another researcher seems to think he was living with Ludwick Ache in 1790, but does not know if he was a son or nephew. His (Lewis') wife's name was Jane, and she is buried in Jacksonville Pa, possibly originally from NJ.