Otto married Clara Matilda Petersson on 22 Nov 1889 in Göteborgs Haga Församling, Göteborg och Bohus Län, and was divorced on 27 May 1908. Clara was born on 28 Sep 1861 in Göteborgs Domkyrkoförsamling, Göteborgs och Bohus län; died on 30 Jan 1947. [Group Sheet] [Family Chart]

1. Carl Otto Fredrik Ekman was born on 19 Feb 1891 in Göteborgs Haga Församling, Göteborg och Bohus Län; died on 19 Apr 1985.
2. Carin Elisabeth Amalia Ekman was born on 21 Jul 1892 in Göteborgs Haga Församling, Göteborg och Bohus Län; died on 28 May 1984.
3. Johan Henrik Magnus Ekman was born on 1 Feb 1895 in Göteborgs Haga Församling, Göteborg och Bohus Län; died on 7 Apr 1973.
4. Sven Ragnar Daniel Ekman was born on 20 Dec 1897 in Göteborgs Haga Församling, Göteborg och Bohus Län; died on 1 Jan 1984.
5. Arne Jacob Robert Ekman was born on 31 Oct 1900 in Göteborgs Haga Församling, Göteborg och Bohus Län; died on 22 Aug 1902 in Göteborgs Haga Församling, Göteborg och Bohus Län; was buried on 26 Aug 1902.

Otto married Elvira Strand on 18 May 1912. Elvira was born on 22 Jul 1883 in Göteborgs Domkyrkoförsamling, Göteborgs och Bohus län; was christened on 10 Aug 1883; died on 12 Jun 1938. [Group Sheet] [Family Chart]

1. Vilma Torborg Ottonie Ekman was born on 16 Apr 1906 in Göteborgs Domkyrkoförsamling, Göteborgs och Bohus län; was christened on 19 Apr 1906; died on 3 May 2000; was buried on 20 Jun 2000 in Valla Minneslund, Valla Församling, Västra Götalands Län.
2. Karin Elisabet Ekman was born on 13 Jan 1909 in Göteborgs Annedal Församling, Göteborg och Bohus Län; died on 9 Sep 2010; was buried on 8 Oct 2010 in Västra Kyrkogården.
3. Siv Helga Elvire Ekman was born on 26 Aug 1912 in Göteborgs Annedal Församling, Göteborg och Bohus Län; was christened on 25 Sep 1912; died on 7 Feb 2005.