My grandfather was Sydney, son of Henry Augustus Van Wickler.Sydney had three children: Helen and James (my father) who are deceased and Lillian who I spoke to over the weekend.She confirmed the names of Sydney's brothers and sisters:John, Richard, Mamie, Arthur and George.I gather that Frank Percival Van Wickler was the only son of the aforementioned John.
These names are consistent with the information from a web sitehttp://campus.houghton.edu/webs/employees/jvanwicklin/index.htmhttp://campus.houghton.edu/webs/employees/jvanwicklin/index.htm created by a relative of ours who has done hundreds, if not thousands, of hours of research of the van wickler/et al lineage.It traces all lines back to 1664!
This site has some errors in it as it lists Sidneys b as 1883 yet I (and Social Security) believe it to be 1885. At least that's what we all believe it to be.It was what was listed at his funeral which I attended back in 1980. I will be sending updated info to the web master there.