Hi Robert, Thanks for your extra research. On page 78 in my copy of the book "Descendants of James Elder Sr. of Armstrong and Clarion Counties Pennsylvania," I found James Elder Jr. m Catherine Adams, with 11 children, including a son James. No marriage or death dates for him. Book says: "F05. James Elder III, b. 15 Jan 1834; prob d young" also: "F02. Harvey Rufus Elder, b. 17 Nov. 1825.
1850Census (Ancestry Index) Name:James Elder Age:16 Estimated Birth Year:abt 1834 Gender:Male Home in 1850 (City,County,State):Perry, Clarion, Pennsylvania Family Number:2283 Household Members: NameAge Catharine Elder46 Rufus Elder24 William Elder23 Snas Elder20 James Elder16 Thomas Elder14 Margaret Elder11 Catharine Elder9 David Elder6 Abarevra Elder3 Mary Elder0 James Elder46 Source Citation: Year: 1850; Census Place: Perry, Clarion, Pennsylvania; Roll: M432_767; Page: 161A; Image: 328. *** Book reference: "Descendants of James Elder, Sr. of Armstrong and Clarion Counties, Pennsylvania" compiled by Sharon Robinson Huffman ; assisted and edited by Lavon Elder Mundinger and Ann M. Brooks. 1995, rev. 2000. Includes index. Book in Salt Lake LDS library: 929.273 EL22h also Film in library: FHL US/CAN Film 1440717 Item 6 To view a digital version of this book see Brigham Young Univ. webpage: at http://contentdm.lib.byu.edu/cdm4/document.php?CISOROOT=/FH9&CISOPTR=115247&REC=1http://contentdm.lib.byu.edu/cdm4/document.php?CISOROOT=/FH9&CISOPTR=115247&REC=1