What I could add:
Josehine have/had another offspring called Silkeyfine. It was also selected by T.V. Munson in Texas (both befor 1904). No info abut their pollent parents.
Osage = H69A x Szukis
Briggs/Giving Tree - I’m not an expert but for me it’s look like it was grafted near the ground level Helping Preserve Bloomington’s Most Giving Persimmon Tree | Bluestone Tree. The estimated age of this tree is above 66 years so it was planted during the ‘silver age’ of american persimmons. I use this term for the times when McDaniel and other growers were activ, so it could be some lost cultivar.
Geneva Long is F1 from George Slate orchard seeds. I found that he grown at least Garretson,Early Golden, Kitch, Josephine, Kansas, Killen, Penland, Hicks, Miller, Bleeker, Miles, Lambert, Conchin, Edmonds, John Rick, Meader, Juhl, Spencer, Lena, Fehrmann (60n?), Ruby (Talbot’s), Pieper. With Lambert as my personal mother candidate.
Juhl/Yates is a mystery. It was introduced by Talbot’s nursery near 1956. For me it’s from wild (it shows black spots in flesh, which I don’t saw in other {unrelated} cultivars). It’s worth to mention that Talbot also offered Ruby, Morris Burton, Craggs, Woolbright ,Miller, Killen, EG, John Rick, Beavers.
Keener - maybe it’s a rootstock from Burbank’s nursery. I show less vigor when I compare it with my other trees, but still look like pure d.virginiana.
Mohler - If you could only grow one American Persimmon, which one? - #84 by hobilus
Pipher - was found by Ralph Kreider. The original tree was planted near 1913 and was likly a grafted tree of lost cultivar.
John Rick and Florence - both are Killen x William (mid 50’s). McDaniel describe them as morphologicaly different from their mother. William was described as a male tree with sponatnous female flowers but it was likly unrelated to genetic factors (John Rick don’t sport male limbs as far as I know). That being said I will consider it as unrelated tree to EG family, by the way it comes from understock material from Illinois (when they start to work with persimmons in Urbana).
Brittain’s Blue or Blue - ‘1978 S. Indiana Discovered by Leon Pounds…’
To be continued…