I've traced this line as I believe its connected to my husband's maternal Leffler line. To my knowledge, Jose Leffler was the only child of (John) Martin and Anna Maria Leffler. (John) Martin, born abt 1800 in Washington Co. MD being the son of Peter Sr. and Catherine Leffler (who migrated from Washington Co., MD between 1805-1806 first to Perry Co., OH, had a few kids and then on to Fairfield County, OH by 1819. Peter and Catherine Leffler ran a schoolhouse in 1831 in Section 31 of Rushcreek Twp., Fairfield Co., OH. My husband's gg grandmother was Rebecca Leffler, whom I believe was a sister to Martin Leffler.
I've not been able to PROVE the relationship of this Martin Leffler to our Peter Leffler Sr.ancestor, but in the absence of proof, I have many strong clues.
Peter Leffler(Sr.)is shown as Peter 'Lefler' on the 1820 census in Rushcreek Twp., Fairfield Co., OH and I have traced and proven ALL of his known children except one male son that is shown on that census, said son that I believe was Martin Leffler.
Martin Leffler first purchased 80 acres of Congress lands in Section 30, Berne Twp., Fairfield Co., OH on 9/1/1824, (near Jonathan Leffler, whom I believe was his brother).
On 5/15/1826, Martin Leffler and his wife, Anna Maria, sold 36 acres of it to Lawrence Beck.
On 3/26/1831 Martin Leffler and his wife, Anna Maria sold 40 acres to Mathias Beckum . (I have no further info on this Anna Maria Leffler)
In 1840, 40 acres of land in Berne Twp. that was a vineyard, was seized of Martin Leffler for back property taxes. (He obviously had purchased more land at one time.)
That is the last record in Fairfield Co., for Martin Leffler. There are a few loose records in Ross County in the name of John Martin Leffler where Jose eventually headed that leads me to believe that Martin went there and changed his name possibly because of tax debt in Fairfield County.
Jose Leffler's (I've never seen any documentation that his first name was anything but 'Jose'.)death record in Ross Co., OH lists his DOD as 10/3/1903 of 'inflamation of the liver' and his age at time of death being 72 years, 10 months and 26 days, which makes his birth date 5/26/1828, I believe in Fairfield Co., OH. he's buried in Greenlawn Cemetery in Chillicothe, OH with his wife Catherine (Schaeffer).
Jose Leffler is on the 1860 census of Perry Twp., Hocking Co., OH as Jase 'Lefler'.
He's on the 1870 census of Madison Twp., Fairfield Co., OH as Jose 'Lefler' and on the 1880 census, same place, as 'Lose' Lefler.
Keep in mind that information provided to a census taker was often given by children while their parents and older siblings were out in the fields working, and as such was often time wrought with errors.
Hope this helps fill in a few blanks.