M, b. circa 1883
| Birth* | circa 1883 | Cort G Martz was born circa 1883 at Ohio . |
| Marriage* | | He married Margaret E Oard, daughter of David Richard Oard and Ella Welch. |
| (Witness) Census1910 | 20 April 1910 | Cort G Martz appeared on the 1910 Census of Altaville, Calaveras County, California, in the household of David Richard Oard and Carrie P Emerald. |
| Census1920* | 5 February 1920 | Cort G Martz and Margaret E Oard appeared on the 1920 Census of Greenwood Twp, El Dorado County, California, at Auburn Road, enumerated 5 February 1920. Their children Percy Cecil were listed as living with them. |