laceflowers on Family Tree Circles

My great-grandmother's name was Johanna Zischke. Apparently, the family originally came from Stolp, Pommern, Prussia (Poland). She married Richard Maguire. I discovered 11 years ago that I am adopted and that I am biologically related to Johanna and Richard. My birth father was Hector Maynard Maguire and my birth mother was Merle Rose Mooney. If anyone can help me with information about any of these people it would be greatly appreciated. Thanks.