Looking for additions/corrections/connections for the following:

Descendants of Samuel R. Sweetman

1 Samuel R. Sweetman b: Bet. 1818 - 1820 in England d: Aft. 1880 in Michigan?
.. +Rebecca H. Dunmore b: Abt. 1818 in Pennsylvania or Rhode Island d: Bef. 1860 in New York or Rhode Island m: Bef. 1840 in Pennsylvania
2 Harriet Amelia Sweetman b: Abt. 1841 in Pennsylvania
2 Anna M. Sweetman b: Abt. 1845 in Pennsylvania
2 William H. Sweetman b: June 20, 1849 in Trenton, Mercer Co., New Jersey d: May 31, 1920 in Vicksburg, Brady township, Kalamazoo Co., Michigan
... +Sarah Alvira Swartzell b: June 20, 1849 in Three Rivers, St. Joseph, Michigan d: April 10, 1915 in Kalamazoo, Kalamazoo Co., Michigan m: October 20, 1874 in Three Rivers, St. Joseph Co., Michigan
*2nd Wife of Samuel R. Sweetman:
.. +Sarah P. b: Abt. 1837 in New York m: Bef. 1860 in New York or Rhode Island
2 Frederick E. Sweetman b: Abt. 1858 in Rhode Island
2 Frank H. Sweetman b: Abt. 1859 in Massachusetts
... +Linnie N. b: Abt. 1879 in Ohio m: Abt. 1900
*2nd Wife of Frank H. Sweetman:
... +Sylvia V. b: Abt. 1886 in Indiana m: Bef. 1920
2 Estelle I. Sweetman b: Abt. 1867 in New York d: Aft. 1910 in ?Douglas Co., Nebraska
2 Carrie May Sweetman b: August 1870 in New York
Thanks.