According to the John T. Humphrey "Pennsylvania Births" series:
Johannes and Mrs. Marcretha Ebener baptized their son Conrad at Rockland Lutheran Church, Rockland Township, Berks County, reporting his birthdate as 29 March 1770.
Johannes and Mrs. Anna Margretha Ebner baptized their son Joh. Lorentz Ebner at Rockland Lutheran Church, Rockland Township, Berks County, reporting his birthdate as 2 March 1762.
I am working on the hypothesis that one of these sons likely was the father of a daughter named Catherine, but have not found anything yet to establish (or refute) that guess.If so, one of the 2 are likely to be my 4th great grandfather.
If not, I'm barking up the wrong tree myself.
But your guess that Conrad and Lorents were likely brothers does appear to be very much correct.