Dirlam Immigrants

I believe all Dirlams in the US can trace their ancestry back to one of four immigrants:

1. Caspar and Andrew Dirlam, brothers born in 1829 and 1832 in Baden-Achim, Hannover, who came to Brooklyn, New York. 
2. Jacob Dirlam, born in Esselborn, Hesse Darmstadt, in 1808; and died in Cherry Ridge, Pennsylvania in 1884. 
3. My ancester John O. Dirlam, possibly born in Kestrich, Hesse Darmstadt, about 1750; and died in Blandford, Massachusetts in 1836. 
4. William Dirlam, born in Dirlammen, Hesse Darmstadt in 1820; and died in 1887 in Penn, Iowa. 
5. Georg Dirlam, born in Reuters, Hesse Darmstadt in 1808; and died in Seadrift, Texas in 1851. His descendants spell their name Dierlam.
6. Johann Peter and Justus August, who came to Huron County, Ontario. 

The last four were from what was Hesse-Darmstadt (until 1806), afterwards the Grandduchy of Hessen, then the German Empire (after 1871). Perhaps we're all cousins.

Did Marianne Weller (daughter of Anna Christina Dirlam Weller, granddaughter of Johann Georg Dirlam of Vadenrod) really became the third wife of Jacob Dirlam (of Esselborn) in Cherry Ridge? I can't find any blood relationship.

Did I miss any Dirlam families? I'd love to hear. Let me know by email.