It’s a bit complicated but, the father of Mathias Aberle, Jacob Friedrich Aberle, had a brother Johann Georg Aberle (born 11 Mar 1784). Johann Georg Aberle, I believe, is my 4th Great Grandfather. He had an illegitimate daughter Anna Aberle (born 14 Apr 1813). Anna Aberle married a John Braun (Brown) also from Wittershausen. They had a daughter Katharine Brown who married George Myers my 2nd Great Grandfather.
It’s interesting to note that John Braun and Anna Aberle arrived in America on the same ship as Mathias Aberle. That was the ship Ernst and Gustav that arrived in Baltimore 30 Jun 1840.
I believe your Mathias Aberle died in Allegany County, Maryland on 26 Jul 1903. Do you have a copy of his death certificate? This might give us more information to make a match.