I found the answer. His parents were Rudolph Louis/Lewis Boller, b. 1824 in Hesse (now Germany) & Kate/Katrine/Catharine Ernest/Ernst, b. 1832 in Bavaria, Germany.

His siblings were:
1) Millie L. Boller, b. 1859, NY, m. Daniel M. Calkins, b 1853, NY;
2) John Henry Boller, b. 1860, NY, m. Mary F. ___, b. 1858 in NY;
3) Jenny Boller, b. 1862/63 in NY;
4) Louisa Boller, b. 1864/65 in NY;
5) Gertrude M. Boller, b. 1869 in NY, m. John English, b. 1866, Canada;
6) Albert L. Boller, b. 1871 in NY, m. Cora B. Chase, b. 1875 in PA.