Update:
Spent the day at the Cocalico Historical Society. I could not find George or any Elrick/Alricks variations listed in any of the records other than the general PA Rev. War records listed as George Eirich under Bauer's command (the German Unit), but already had picked that up on the internet under Sellins unit. I searched the tax records for Cocalico and Warwick from 1750-1785 and some Cocalico and Warwick church records. I didn't check the name of Ulrich (lots of them there) since I already have alot of info. about them and haven't been able to make a connection so far.
Also searched the birth records for Lancaster between 1750-1780 (approx.) Did not find any record for Elizabeth. She is not listed with the children of Johan George Hausholter (Householder and variations). Whether an oversight of the records keeper or a possibility that Elizabeth is the daughter of another Householder, I was unable to ascertain.
I traced a George Elick/Ellick (only name close other than Ulrich) in tax records for 1770-1783. He was a saddler and in 1785 is not listed, but a George ilig(b.1744-1803) is then listed and onward as the owner of a tannery. Something I question is George's birth in Bedford? Why would George move back east when most in that day were moving westward? Where is that information other than on some of the genealogies listed online which I find are flawed. Also, have seen two different death places online for George--Bedford and also with his son in Ohio?
Also checking out various spellings like Elrick, Elerick, Elrich, Ellrick, Eldrich, Ulricks, Ulrich, Alricks, Alrich et al.....
I did find a George Alricks listed in NJ on Ye Olde Plantations of Piscataway which would probably have been in the early 1700's or late 1600s. Also found some other Elericks, Alricks, Alrich in records of the 1700s , other than those of George and his sons or Pieter Alricks descendants (who have a genealogy listed online). And I have lots of info. on the Ulrichs in the 1700s.
I tried to check out the NJ connection, but reached a deadend. The local library is very limited. Next possibility might be the records library in Philadelphia or maybe a trip to Bedford. Also Maryland, since I have seen various connections to that state. Any help anyone might be able to give would be a welcomed addition to this search.