This has to be a bug rather than how the profiles are set up.
http://www.geni.com/people/Sydney-J-R-Steiner-Mikhail-Strabo/6000000036998021632
Sidney / Sydney J. R. Steiner (Rosenfeld), "Mikhail Strabo"
Biological son of N. N. Irene's First Husband Rosenfeld and Irene Gross Rosenfeld Steiner
Adopted son of Geza Steiner
Half brother of Charles B Steiner and George Steiner <--- WRONG WRONG WRONG
Charles B Steiner
Son of Geza Steiner and First Wife of Geza Steiner (Unknown)
Brother of George Steiner
Half brother of Sydney J. R. Steiner (Mikhail Strabo) <--- WRONG WRONG WRONG
Clearly there are no common biological parents, so they cannot be half-brothers. (George and Charles are full brothers; Sidney / Sydney is their adoptive brother.)
catherine yronwode
