Missed that part and agree with the above.
A Siler would look way out of place and totally wrong on an Ohio.
You want a (later) English style lock for sure. Ohio gunsmiths "mostly" came from "back east" and moved with the settlers as things headed west. Many had established shops in Pennsylvania, Virginia or Maryland before they set up shop in Ohio (and mostly in the very latter years of the Golden Age/birth of the cap era).
The L&R Late English which is supposedly based on an Ashmore uses exactly the same plate as the L&R 300 caplock (Leman Trade) and would be "more typical" of what you would see on an Ohio. If you perfer a Chambers lock I would suggest the Late Ketland would be also appropriate in some instances, particularly if you filed the tail round.
I would say that the majority of the locks on existing Ohio's are either Golcher's or Leman's of some description most because the majority of Ohio rifles were probably built as caplocks - the Ohio "era" was simply later along the line and flints were "out of style" before it really got into full gear.
I could dig out the notes but going from memory, the Vincent's shop notes indicate that they were restocking and converting about 3 to 5 rifles for every one that they were building. So if that's "indicative" of the average Ohio builder upwards of 75% of "their rifles" were simply restock/rework of rifle from back east with a new caplock from the hardware store slapped on the side.
(please don't take this as a rub against Ohio rifles - I love them - particularly the cap versions and have personally built a few)
Ohio was just "predominantly" the "land of cap guns" - most the of Germanic roots that any of the builders may have had were long faded along with the locks that the Siler looks like.
Of course, if you look long enough you may find one - just depends what you want.
Here is three more flinter's that I managed to dig out.
(I would only add, if you wanted to build a "representative" flintlock Ohio rifle I would definitely steer away from anything by the Vincents. While Track/Pecatonica etc have left the impression that a Vincent IS an Ohio, the Vincent's came to the game very late. John (the father) was primarily a farmer, secondly a cabinet maker and finally a gunsmith who produced "a few" rifles (on his own) beginning in 1848. Caleb the son was even later than that. For an earlier Ohio flint builders such as the Teafe's (4 of them) or Marker's (Sr/Jr) would be more correct to emulate. At best, a FLINT Vincent (and I believe that one posted above was original) would have been a "retro build" at best - certainly not the "flavour of the day" and may not be representative)
