This LeFevre family was founded by a Huguenot refugee named Isaac. According to some, he was the nephew of Simon and Adrew LeFevre of New Paltz. By far the best record of Isaac and his progeny is found in The Pennsylvania LeFevres by Gerge Newton LeFevre. Below I have copied the section on Isaac. A complete transcript of the book may be accessed at the link "A great Pa LeFevre page" on the LeFevre homepage.
"Isaac LeFevre, founder of the Pennsylvania family of
LeFevres, was born March 26, 1669, near Chateau-Chinon, in the
valley of the River Yonne in France. Died Oct. 1, 1751. Married
in Bavaria, Germany, about 1704 to Catherine Fuehre, who was born
at Landau, France, about 1679 and died in 1749.
From a statement made by John LeFevre, his grandson, who knew
him for twenty years, Isaac LeFevre was "lively, active,
and took a great deal of exercise, even in his old age, and was
very temperate. He prospered in his new home and at the time of
his death owned about 1500 acres of land.
The place of his burial cannot be definitely stated. At the
side of Madame Ferree's grave however, in a space wide enough
for two other graves, there is a small dark colored natural stone
with the initials I.L. carved on the side of it. It is reasonable
to believe that Isaac and Catherine would have been buried beside
her mother but it is not certain.
[Children of Isaac LeFevre]
7-001 Abraham, b in Germany April 9, 1706, d Nov. 20, 1735.
M about 1728 Elizabeth Firre, b. 1710, daughter of Daniel Firre.
Abraham, with the assistance of his father Isaac, built a two
story log house one mile north of Strasburg, Pa., on the tract
which was to be his inheritance at the time of his fathers death.
But dying in 1735, before its completion, his father finished
the building, and thus its remains are the only tangible work
left of our French ancestor Isaac LeFevre of 1669. The house stood
a little west of the present brick dwelling erected in 1836, and
the foundation, even with the surface of the ground, is shown
to visitors. A dozen or more of the great logs from the building,
some measuring twenty-one inches wide, are still in the large
bank barn built in 1837, the year following the erection of the
brick house by George, the grandson of Isaac LeFevre and the grandfather
of the Compiler, George N. LeFevre, who remodeled the house in
1891
We believe Abraham's body was the first to be buried in the
LeFevre Cemetery but there is no marker to that effect. The cemetery
is located a quarter mile west of the big house and contains the
remains of six generations of LeFevres..."