MD Register of Wills Records 1629-1999, Frederick, Inventories 1777-1786 Vol 1 FamilySearch.org 2/13/2019174368 (Had to Browse to Find, not indexed)
Image52of399 Pg 70-72 Frederick Town 1 May 1778 Inventory of the Estate of Jacob Eckmann late of Frederick County dec’d. John Haas & Jimmy Tobias? Appraisors; Gaecy? Abemern? & Christn (her mark) Eckman - Kindred; 15 Aug 1778 Peter Crabel & Peter Bover Executors of Jacob Eckman late of said county dec’d made oath … true inventory.

Hans Jacob Eckman 1737-1778 Valley Forge, PA; Marr: First Reformed Church, Lancaster, PA, Anna Maria Taylor by Rev Henry William Stoy24041 (Anna Maria Taylor Marr: to Jacob Eckman, s/o Johannes Eckman, supposed brother of Hans/Johannes Jacob Eckman, this Jacob Eckman’s father. Died in Lancaster PA not Frederick Co MD?)

Descendants of Hans Jacob Eckman of PA and MD and Miscellaneous Eckman’s14422
(This book seems to have mixed the first two generations together. There is Hans/Johannes Jacob Eckman, the Immigrant and his only son Jacob Eckman, whom had several children.)

Pg 8 Children of Hans Jacob Eckman (Order of Birth Unknown):14422 (Jacob’s children?)
1. (?) J. Adam Eckman Marr: at Old Goshenhoppen, Anna Elizabeth ___. She seems to have died abt the time of the birth of a child, Christina Eckman, who was baptized 20 Jan 1758. J. Adam Eckman Marr2: Jan 1758 to Christina N. ____. They had at least one child, Maria Margaretha, who was baptized at Old Goshenhoppen. (Grandchild of Jacob, Christina b: 1758, would make this J Adam b: ca 1738, when his father Jacob was b: 1737? Not enough time to fit)
2. (?) Abraham Eckman is mentioned in the Old Goshenhoppen Church Records as a witness to the baptism of Casper Griesemer’s son. No date.
3. (?) Henrich Eckman is listed as one of the Catechumens of Rev George Michael Weiss 1748-1761 at Old Goshenhoppen.
5. Jacob Eckman is said by Judge John S. Eckman to have gone to VA. He is probably the Jacob Eckman Jr listed as a member of the Evangelical Reformed Church at Frederick, MD in 1775

C-1 Jacob Eckman Sr immigrated to the US 18 Sep 1727 to Philadelphia PA174159 (If he is born about 1737 then he could not have immigrated 10 years before?)

Sweden Stockholm City Archives Index to Church Records 1546-1927 Film#00593330 Image177of459 FamilySearch.org174369 (Him? Sister? Parents?)
Hans Eckman; Parents Jacob Eckman, occ: handelsman & Anna Catharina Haellman; Fodd (birth) 9 Feb 1736; Dop (baptism): 11 Feb 1736 Nikolai, Stockholm, Sverige, bd (Vol): 8 Sida (Pg) 360
Maria Catharina Eckman; Parents Jacob Eckman, occ: handelsman & Anna Catharina Haellman; Fodd (birth) 2 Apr 1737 Dop (baptism): 3 Apr 1737 bd (Vol): 8 Sida (Pg) 360