Here's one additional bit of info on Fred you didn't list:
1880 CENSUS: Census Place Galveston, Galveston, Texas Family History Library Film 1255305 NA Film Number T9-1305 Page Number 84B, Age 45, Occupation Seaman
I also have him also married to a Wilhemina on the 1870 Census, but I don't have a Surname
I also have a copy of Henry Wolfe's Naturalilzation Record with a Fred Wolfe listed as a witness
I have no info on any children born to Fred and Olive, but some info on three children born to Fred and Whilhemina.
Can you inport a GEDCOM file? I'll be happy to send you what I have.
If I didn't post it, my ancestry is
Bill Ferris, Son of Onnie A. Ferris & Mildred Kenzel
Onnie A. Ferris, Son of Willian Benjamin Ferris and Viola Rosalie Wolfe
Viola Rosalie Wolfe, Daughter of Henry Wolf and Sarah Jane Avant.