Andrew Brunswick was my husband's 3x great-grandfather. He emigrated from Germany to America in 1853 and became a farmer in western Ohio's Auglaize County. Here he is with his family in the 1860 census:
Andrew's wife Philomena had a maiden name of Oldendiek (or Oldendick depending on the source). Earlier this year, I found Andrew and Philomena's wedding record in a book indexing Mercer County marriages. In her marriage record, Philomena's maiden name was listed as 'Holdink,' which is not really that different from Oldendiek phonetically-speaking. I am willing to go out on a limb and say that Clements 'Holdman' is probably Philomena's younger brother. As to why he may be living with his older sister, I don't know. In fact, there is much I do not yet know about this Oldendiek/Oldendick family that I still need to try to research.
Andrew Brunswick is also listed in 1860's agricultural census. I love these 19th century ag census schedules because they give us a sense of what our ancestor really DID on their farms. Here is Andrew listed at the bottom of the images below (click for larger image).