Dear List: I'd appreciate some assistance uncovering a mystery regarding my great-grandmother LOUISE STELZNER.    LOUISE recalled spending a good deal of time in a place called Winkelsdorf in Prussia. My father thought this was their summer home or it might have been where her grandfather, "the duke" lived. Later family records show that LOUISE married, had 2 daughters, was widowed, married again and had 2 more daughters. I know that daughters # 3 & 4 were born in Deutsch Eylau in Prussia.    So far, I've searched under all of the family names at LDS and every other genealogy site I know of. Nothing comes up for LOUISE other than a few Ancestry.com census entries and a trip she made back from Germany in 1907. I've found nothing on her parentage or birthplace and nothing on her first or second husband.   Here's what I know - or think I know: LOUISE STELZNER was born 1841 in Prussia. Father was possibly CHRISTIAN STELZNER. Mother was possibly MARIE ARLOV, ORLOV, ORLOFF, ORLOPP, AURLAUF? I am hoping that she wasn't confusing the name with Eylau, which sounds similar. Mother was Herzoglich, or the daughter of a duke in or near Winkelsdorf. LOUISE married Mr. GALL and had LAURA GALL and JOHANNA GALL (b.1870) Mr. GALL died. LOUISE married Mr. HUSAR and had EMMA HUSAR and LISETTE HUSAR (in 1886) in Deutsch Eylau. The HUSARS came to America around 1893. I haven't found the family's passage to America. LOUISE HUSAR lived in Milwaukee all her life and died in 1927 at the age of 86.   I apologize if I'm being too wordy. Any help or advice finding the duke or Louise's parentage would be truly appreciated! Thanks so much. Lauren