You still gave me very little to go on. Where did John and Mary live in 1900 census and what were some of their childrens' names? I found both John Boland and Patrick Bolands in PA in 1860 census, but not knowing the year your John P. Boland was born I am not going to post them. Nor, did I check the 1870 and 1880 census records until I am sure which one I am looking for. The more information you can provide, the easier it is to help you.