i'll email you with a fuller outline.
(caveat: this is a working file- i have some original source material, but some of this tree is compiled from on-line genealogies and therefore may not be accurate.)

Descendants of John Adamson Berkshire (first 2 generations)

1 John Adamson Berkshire Abt 1750 - 1831
. +Elizabeth Abt 1752 -
........ 2 William Berkshire 1776 -
............ +Ruth Bradgot 1777 - 1819
........ 2 Cornelius Berkshire Abt 1780 -
............ +Elizabeth Stealey
........ 2 Ralph Berkshire Abt 1781 -
............ +Sarah Kyger
........ 2 Mahala Berkshire 1794 -
............ +Dudley Evans Dent 1787 - 1843

Descendants of Mahala Berkshire (3 generations)

1 Mahala Berkshire 1794 -
. +Dudley Evans Dent 1787 - 1843
........ 2 George Dent 1813 -
............ +Sarah Beaty
........ 2 Alpheus Wilson Dent 1815 -
............ +Sarah Dulin
................... 3 Cornelius Berkshire Dent
....................... +Sina Jane Roberts
........ 2 Maria Berkshire Dent 1817 -
............ +James C. Beaty
................... 3 Alpheus Linsley Beaty 1851 -
....................... +Diana Metz
........ 2 James E. Dent 1819 -
........ 2 Sarahann Dent 1821 -
............ +Frederick Ten Eyck
........ 2 Zerilda A. Dent 1824 -
........ 2 Cornelius B. Dent 1826 -
............ +Juliann King
................... 3 Sarah Elizabeth Dent 1854 - 1929
....................... +William Allen Johnson
........ 2 Oliva M. Dent 1828 -
........ 2 Anarah Frances Dent 1831 -
............ +Henry Minor Ice
................... 3 Pliny Wellington Ice
................... 3 Ulysses Byrom Ice
................... 3 Cassius Herschel Ice
................... 3 Alva Bascum Ice
................... 3 Dermaus Keiber Ice
................... 3 Palmyra Jane Ice
................... 3 Harlin Mead Ice
................... 3 Sidney Averil Ice
................... 3 Otis Hampton Ice
................... 3 Richard Lebbeus Ice
................... 3 James Wirt Ice
................... 3 Orlena Marie Ice
........ 2 Marmaduke Dent 1833 - 1908
............ +Mary Ellen Snider - 1869
........ *2nd Wife of Marmaduke Dent:
............ +Margaret Reed 1851 - 1929
................... 3 Dudley Evans Dent 1875 - 1971
....................... +Minnie Arda Hayes 1884 - 1968
................... 3 Marmaduke Dent 1873 -
................... 3 Mary Ellen Dent 1897 -
................... 3 Thomas Jefferson Dent 1875 -
................... 3 James Blain Dent 1883 -
................... 3 Silvey Agness Dent 1881 -
................... 3 Marshall Mortimer Dent 1886 -
................... 3 Homer Lee Dent Abt 1890 -
................... 3 Allis Dent 1895 -
........ 2 Margaret E. Dent 1836 -
........ 2 Dudley E. Jr. Dent 1838 -
........ 2 Richard M. J. Dent 1840 -