Henry Garman (died 1847) and Miss Bargstressen/r were the parents of
Peter P. Garman (died 1869) married Catherine Minium, a daughter of Nicholas Minium.Of there 7 children (who you name),
Peter (son of above Peter P. and Catherine), born October 12, 1830, married Sarah Sturb in 1855, a daughter of Benjamin Sturb.They had 2 children:Jefferson (a shoe dealer in Aberdeen, Washington), and William D.(an operator in Mill City, Oregon).After Sarah Sturb Garman's death in 1864, Peter Garman married Mary Landis, a daughter of Jacob Landis.No mention of any children from this 2nd marriage. Peter still alive when this article was written from below source.
Commemorative Biographical Records: Centre, Clinton, Union, and Snyder Counties - published in Chicago in 1898, by J.H.Beers.