Jeist Joseph Speier

Source: Heilbrunn tree

Per Mark Gordon referencing information in the L Horwitz tree provided by Peter Speier: "Guxhagen marriage record #4 from 1835 shows the marriage of "Just Speyer from Röhrenfurth and Röschen Speyer" from Guxhagen. He was the son of "Seligman Speier and Gidel Joseph" (agrees with cover page of your tree). I believe Just = Joseph. Note that ages for Roschen do not agree. (The 1813 birth date is wrong; Rischen/Röschen was born in 1808 per the detailed Guxhagen birth record signed by both parents. The 1835 marriage record cited above corroborates saying she was 26 years old at marriage.)"

The Family Register Röhrenfurth shows him as Jeist Joseph Speyer born 10 February 1796.