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Op Den Graeff
Op den Graeff, also ''Updegraff, Uptegraft, Updegraft, Updegrave, Updegrove, Uptegrove, Ubdegrove, Uptegraph'' is a Dutch and American family. History The earliest historically proven Op den Graeff, Herman op den Graeff (1585-1642) lived in Kerken, Aldekerk (Kleve), near the border to the modern Netherlands. Some believe that Duke John William, Duke of Jülich-Cleves-Berg had a morganatic marriage prior to 1585 with Anna op den Graeff (van de Aldekerk), with whom he had Herman. No substantial evidence of any relation between the Op den Graeff and John William, Duke of Jülich-Cleves-Berg has ever been presented, so most likely that connection is non-existent. During the 17th century the Op den Graeffs were a family of linen weavers in Krefeld and continued this occupation later in Germantown, Philadelphia, Germantown, although the family purchased jointly 2,000 acres of land in Germantown. In Krefeld the family belong to the Mennonite circle, which turned Quaker in part ca. 1679- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass Windows Of Hermann Baron Op Den Graeff
Glass is a non-Crystallinity, crystalline, often transparency and translucency, transparent, amorphous solid that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling (quenching) of the Melting, molten form; some glasses such as volcanic glass are naturally occurring. The most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silicon dioxide, silica (silicon dioxide, or quartz), the primary constituent of sand. Soda–lime glass, containing around 70% silica, accounts for around 90% of manufactured glass. The term ''glass'', in popular usage, is often used to refer only to this type of material, although silica-free glasses often have desirable properties for applications in modern communications technology. Some objects, such as drinking glasses and glasses, eyeglasses, are so commonly made of silicate- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
