According to the 1900 Census, Dennis was married 10 years to Annie before she died. According to Marriage Certificate No. 9061 between Louise Foley and Dennis, Dennis's first marriage ended when Annie died in 1900. As the
1900 Census was taken on 4 June, 1900, it is assumed that Annie died in the first half of 1900. Also, it is assumed that they were married between 5 June, 1879 and 3 June 1900.
1880--Chester, Pa., NARA Film T9-1126, Page 18 (with Dennis Sr.).
1900--Chester, Pa., NARA Film 1405, Page 6B (With Dennis Sr.). Baptismal Records St. Michael R. C. Church, Chester, PA, USA 2003 Leonardi CD > leo5gno.ged Census 1880 PA