Chaya “Ida’s” potential maiden name of Feinstein comes from three sources-- her daughter, Rachel Leah Sherman Glass’s death certificate (New York), Ida’s death certificate (Baltimore, Maryland), and Ida’s father’s name on her matseva (headstone) in Baltimore, Maryland. However, original records held by Latvia for the 1876 birth of son Iudel Abraham Sherman in Bauska indicate that her maiden surname (as Kasriel’s wife) was Kleiman.
Death records are notoriously inaccurate for maiden names/parents' names of deceased due to the source of the information being at least one generation removed from the information being provided.