Hi Mike...
I'll give it another shot....
Would this be what you are looking for:
John Doe Sr
______________________|
|
b:
m: 07 May 1901 in Bartow, Ga, USA.
d: Bet. 1907-1910
Census: Bef. 1910
If so there is a Census Fact you could use.
Add the Census Fact & Field in your customized view in the Far right pane of the People - Family view. As this would make it easy to enter the date,say "Bef 1910"
Then when you generate your reports/Charts
Select "Census" as a fact field to be included.
I tried it and ran the Pedigree chart got the example above.
You might create a custom Fact
"US FED Census" or any other custom Fact. "Living Aprox"
"Alive"
However I not sure how or if, these custom facts exports in a GEDCOM format if you needed to import to a different software other than FTM.
P.S. If this works, would using CAL for "calculated date" also be a date entry you could use?
RSlack