I am Cristina Hartleben Welch of Arlington, Virginia. I was born in Guatemalaand my paternal grandfather was Friedrich (German of Frederick) Hartleben who immigrated to Guatemala through the US in ca. 1880. a Klaus Hartleben is my cousin the son of Otto Hartleben, brother of Friedrich Harteleben, who also immigrated to Guatemala from Germany approximately at the same time my grandfather immigrated. One of his sons is Klaus Hartleben who now lived in Mexico City. I have more information on the Hartleben family.