During his time in Riga city , he trained and worked as a tailor .
Jacob Youphes was born to a Jewish family in the city of Riga , in 1831 .
During Jacob Youphes ' time Riga Riga city , Jacob Youphes trained and worked as a tailor .
Jacob Youphes was born to a Jewish family in the city of Riga , in 1831 .