1880 - Birth of his biological mother Grace Derby at Middlebury, Addison County, Vermont, USA 

29 May 1909 - Marriage of parents at Rochester, Windsor County, Vermont, USA 

10 Jan 1912 - Birth at Rochester, Windsor County, Vermont, USA 

1961 - Burial of his biological mother Grace Derby at East Clarendon Cemetery, East Clarendon, Rutland County, Vermont, USA  

1961 - Death of his biological mother Grace Derby