Hello Mark,
I found this record:
Fangmann, Catharina Maria, born 1.March 1832, baptized 3.March 1832 in Damme
Parents: Bernard Fangmann at Catharina Maria Bolles, Kötter (Cottage) in Hüde (part of Damme)
Levans: Elisabeth Crone
Godfathers: Anna Maria Wempe at Franz Borringhaus
I have no records before 1830, but I know that in Holdorf is a Johannig farm since 1490.
On this farm worked my grandfather as Heuermann (tenant farmer) and there is also born my father. Later moved this family to Lohne.
About the history of Damme-Holdorf you can find something by my website www.honkomp.de and then click "Damme Auswanderung".
There you can find also this emigration records:
Johanning, Heinrich, by Johanning in Holdorf (1 person) 1838 from Holdorf
Fangmann, Johann Heinrich, son of Heinrich Fangmann, by Barhorst (1 person) 1838 from Ihorst
I hope it help,
Werner Honkomp