Some of my most recent findings:
Charles Biersdorfer (biersd001cha) - shown as Clarence in Baseball Reference
Almost all the Cubans in the minor league database (until 1935 where I'm at anyway) shown as American. For reference see Jose Montes de Oca (montes049jos), Tomas Romanach (romana049tom), Joe Olivares (olivar001jos), Tommy De La Cruz (delacr001tom)
Jack Lelivelt (lelivja01) - shown as American not Dutch
Olaf Henriksen (henriol01) - shown as American not Danish
Ulrich Ruell (ruell-001ulr) in BR as Foot Ruell from Canada not America
Edward Schutzle (schutl001edw) shown as American not 'United Kingdom' (could we default to English just to get close than him being American?)
Marty Krug (krugma01 and krug--002mar) shown as American not German and as 'African'. I think this is two different players combined.
I think Ballplayer Breaux (breaux001---) and Russell Breaux (breaux001rus) are the same guy
Ballplayer Overholser (overho001---) shown in BR as Harold Overholser
Ballplayer Klontz (klontz002---) looks to be the same guy as BR's Dutch Klontz (klontz001---)
Jack Quinn (quinnja01) shown as American not Slovakian
Hoseph Aughenbaugh (aughen001hos) shown in BR as Joseph
Henry Peploski (peplos001hen) shown as American not Polish
Ballplayer Agricola (agrico001---) is likely Herb Agricola (agrico001her)
Ballplayer Heatwole (heatwo001---) is likely Kirk Heatwole (
https://www.baseball-reference.com/r...d=heatwo001kir)
Bobby Estalella (estale002rob) shown as American not Cuban
Dutch Schesler (schesl001cha) shown as American not German - possibly different players minor and major?
Tony Welzer (welzer001ant) shown as American not German
Dutch Schliebner (schlie002fre) shown as US (and as born in Berlin, NH) not German