James Latimore ("Latimer") Alder and his wife Catherine (Silcott) Alder had 9 children that I'm aware of, and you are the first person I know of who is researching the line of their son William Silcott Alder. Latimer and Catherine's children were:
1) Emily Jane (b. 1809 Loudoun Co., VA; m. Archibald Thrasher 30 Dec 1837 Loudoun Co., VA; d. 1877 Iola, Allen, KS)
2) Ann E. (b. VA; m. John McKelvey 30 Sep 1847 Belmont Co., OH)
3) Perry (b. Loudoun Co., VA; died early)
4) Conrad Bitzer (b. 1811; d. 30 Aug 1881 Iola, Allen, KS) Never married.
5) Anderson (b. 10 Jul 1814Loudoun Co., VA; m. (1st) Rachel Kemp 3 Oct 1839 Belmont Co., OH ; m. (2nd) Martha Ann Hubbard 8 Nov 1849 Bethesda, Belmont, OH; d. 30 Jul 1882 Hamblen, Brown, IN)
6) William Silcott (b. 1817 Loudoun Co., VA; m. Mary E. Burkett 15 Aug 1848 Loudoun Co., VA)
7) Leonidas Silcott (b. Aug 1818 Loudoun Co. VA; d. 12 Dec 1893 Brown Co., IN)Never married.
8) Charlotte Silcott (b. 23 Oct 1824 Loudoun Co., VA; m. Samuel S. Price 17 May 1849 Belmont Co., OH; d. 19 Feb 1909 Wellington, KS)
9) Mary Catherine (b. 1828 Loudoun Co., VA; m. John Howell)
I find Latimer Alder in the 1860 Census of Washington Twp., Anderson Co., KS (film #346, pg 52, dwelling 387).I find him in the 1850 Census of Warren Twp., Belmont Co., OH (pg 382, dwelling 302).He was born 16 May 1783 in Loudoun Co., VA, and he died 23 Jun 1874 Iola, Allen, KS.A plaque placed next to his grave many years after his death gives his name erroneously as Latimer "E." Alder.His son Conrad's grave is next to his, and the graves of his daughter Emily Jane (Alder) Thrasher and her family are also nearby.His wife, Catherine (Silcott) Alder, died early, 5 Aug 1845 in Loudoun Co., VA.Latimer was a veteran of the War of 1812, and I believe bounty land for his service is what led him to KS (although he sold both of his land warrents, one in KS and one in IA)
Latimer's father was George Alder (b. 23 Dec 1755 St. John's Parish, Prince Georges, MD; m. Lucy Ann Wynn 17 Nov 1778 Prince Georges Co., MD; d. 28 Aug 1824 Loudoun Co., VA).Latimer's mother was Lucy Ann (Wynn) Alder, b. 26 Sep 1762.George and Lucy Alder had 10 children that I know about.George served as a private from VA in the "Flying Camp" during the Revolutionary War.He, along with 3000 others, were captured by the British at Ft. Washington, NY on the dreadful day of 16 Nov 1776.But he was one of the lucky ones, released "on parole" instead of dying on the cruel prison ships, as was the fate of many.
Catherine Silcott's parents were Jesse Silcott (b. 1765, d. 1844) and Jane Samuels.
My research on the Alder line stops at an earlier George Alder (grandfather of George Alder above) who died 28 Aug 1737 in Prince Georges Co., MD. I know nothing about his ancestry. I have a copy of his estate settlement papers after he died, as he was a tobacco farmer with slaves. He married Elizabeth Keech on 16 Dec 1729, and they had 4 children. She remarried to a Joseph Green Simpson, according to a book I read.
Other related families are: Wynn, Silcott, Samuels, Latimer, Robey, Keech, Smallwood, Colthurst, and Evans.
I know very little about William Silcott Alder. Is there a biography, obituary or other record that you can point me to?I may have his wife's name wrong; according to my source, she was Mary E. Burkett.I've heard that William was a professor of mathematics, but I don't know where.His brother Leonidas was a school teacher in Brown Co., IN, as well as the county surveyor.His brother Anderson was a Methodist minister in Brown Co., IN; and his brother-in-law Samuel S. Price was also a Methodist minister.