KIRKER-DENNIS

I am looking for information on my Family lines I am at that Brick Wall. I have paid a few people for help but they never came through and kept the money. I just recevied my GMothers Marriage Certificate 11/30/2002 and it has confirmed information I have been given years ago.
She married David BRADHAM in Southold LI,NY 3/12/1909 Her parents I can not locate William DENNIS born in Hoboken,NJ around 1865 or so. And her mother Marguerite KIRKER born in Albuny,NY. arnd 1865. I am guessing at the date as my Gmother was born 12/10/1884 in Islip,LI,NY. There is no living family except cousins. My mothers family never said to much about their childhood. I have cancer and have been wk. on this for many yrs. I would like to put it togeather for my children have gone to 1435 on the Bradham/Armstrong line. Thanks Judy