Family KLEIN-Straub-Haessler

Hi! I'm Patricia from italy. I'm searching my family's ancestors and i've some problems. I need informations about KLEIN Ernest Joseph born on Lahr the 25th.06.1866 married on Strasbourg (France) on 3rd.08.1889 with Catherine Schmitt, heis son of Joseph Klein and Sophie Erb. I need also informations about Nicodeme Haessler and Louise Oehler, father and mother of Robert August Jacob Haessler born on Stuttgart the 15th .08.1874 married on Strasbourg yhe 10.11.1896 with Louise Siegel. And i search any informations about Straub Andre born in Biringen? (wurttemberg) married with Barbe Schaidt father of Karl Straub born in Mulhouse (France) the 16th.02.1861. I thank you very much