Mannes Egbertus 1825 and Mannes Egbertus 1828 actually got the same name.... It is extremely rare that 2 children in the same household have the same name, but here it is! I checked both birth records!
And to prove that Mannes Egbertus 1828 is the same as Herman Albert:
Alexander Johannes ten Oever
born 13 May 1862 at 14.00 hrs
son of Mannes Engbertus ten Oever and Theodora Mittendorffhttps://familysearch.org/pal:/MM9.3.1/TH-1-11537-20540-17?cc...
Bottom right hand page.
I can see how he came to use the name Harmen Albert too:
Mannes being short fot Harmannus (Harmen) and Egbertus / Albertus sound simmilar.
Dean, great thinking about the 2 X Mannes Egbertus!
If you like, I can look into the family and provide exact dates.