Thanks aghadowey.
I was thinking the same about the ages -often there are discrepancies.
It is still confusing.
The children you list are at regular intervals in the 1840s.
As yet no children found in the 1850s but then a possibility of one or two - Thomas and Hans in the late 1860s.
I am aware though, from my own family, even in recent times, that there can be gaps of 20+ years between the oldest and youngest in families.