I'm showing in my database a change of name for the MADSEN name in Humboldt, IA which seems to follow the traditional Denmark naming conventions: Mads JENSEN (male) b. 29 Jun 1716 Soby Parish, Denmark mard. Agathe CHRISTENSDATTER and had Christen MADSEN b. 21 Sep 1777. Christen (male) mard. Johanne CHRISTENSDATTER and had Christen Madsen CHRISTENSEN b. 12 Apr 1820 Soby Parish, Denmark. Christen (male) mard. Ane Margrethe PALLESEN and had Mads CHRISTENSEN b. 29 Jan 1857 in Aero, Denmark, d. Jan 1943 in Dakota City, Humboldt, IA. Mads (male) mard. Maria M JACOBSEN and had Harry C CHRISTENSEN b. 11 Jul 1899 Rutland, Humboldt, IA, d. 22 Oct 1962 McCook, Red Willow, NE. Harry mard. Lenora Pearl BURNETT and had one of my cousins through marriage. I don't know if this lady in the phot is related but she could be, considering her given name and surname and location in the time period. Hope it helps.