Under Account > Feasibility Checks are a few options that cross check spouses, parents, and children, comparing their dates of birth, marriage, and death, and report back any that it sees as not feasible, or not probable. This is limited to records for which you are the moderator, but includes their related people for which someone else may be a moderator.
On this page, the "Preview" button runs all of the checks and gives you a count of what how many it finds. Clicking each one brings up the list of people in the search results page, where you can go into each and look into the problem.
In some cases dates will turn out to have typos. In others, it may have what you intended to type in, but at the time didn't realize that there was conflicting information. Other cases, such as a couple having children before their marriage date, might be correct as-is. For these, you can tell the system that the error is correct and doesn't need to be reported to you.
Please contact the Site Administrator if there are any other checks you would like to add to the list. Below is a brief description of each:
|Birth after Death
||A person's birthdate is after their deathdate or burial date.
|Child after mother age 70
||A child's birth date is after the mother was 70 years old
|Child after parent died
||A child's birth date is after a parent's death date
|Child before parent birth
||A child's birth date is too close to, or before, a parent's birth date
|Child before parent marriage
||A child's birth date is before the parent's marriage date. There may be actual cases of this, but good to check nevertheless. For ones that are correct as-is, check the "bef parent marriage" checkbox in the child's record. This will exclude this record from the report.
|Date range more than 50 years
||For birth, marriage, and death dates, when a date is entered in the form "1800/1900". Having a range 50 years or more is not much better than having no date at all. Ideally, a good range estimate would be more like 10-20 years at most.
|Death before marriage / Birth after marriage
||A spouse has a death date before their marriage date, or a birth date after their marriage date.
||There is a large gap in the birthdates of a parent and child, perhaps indicating there should be an additional generation in between, or an invalid relationship.
|Lifespan too long
||People who are shown as living more than 110 years (while possible, not probable)
|Married before Age 10
||People who were less than 10 years old on their marriage date. There may be legitimate cases, like with arranged marriages. For ones that are correct as-is, check the "marriage bef age 10" checkbox in the person's record. This will exclude this record from the report.
|Spouse Birth & Death
||People whose birth date is after a spouse's death date
: When an actual birthdate is not known, try to find a date from a census, or define a speculated birthdate
. This can often be estimated based on the birthdates of parents, spouses, and children. This will aid in the feasibility checks by finding impossibilities that would not otherwise be found, and will aid in duplicate checking and general searching.
For example, if someone is born 1800, his father has no birthdate, and his
father is born 1780. At first this might not seem to be a problem, until you try to assign an estimated birthdate to the generation in the middle. Then it becomes clear that something is wrong. With the dates filled in, the feasibility checks will be able to find more errors that you may not realize.
To aid in finding those without a birthdate, choose "Blank Dates" = "Only" at the top of the search results page.
|Keep on top of your errors!
In addition to this page you can access at any time, the list of feasibility errors will be emailed to you once a month, to notify you of ones you may not be aware of, and to remind you to keep on top of resolving them. While it can be time-consuming, confusing, and maybe even frustrating, it is important to stay on top of resolving these errors. Otherwise, people seeing your data may copy and propogate the same errors, or they may see the errors and not take you seriously since you have something posted that is clearly not correct.
Too many times there are blatant errors repeated over and over (and over and over and over) in research shared and posted to WorldConnect or FamilySearch. We can't do much about it in other trees there, but here, you can fix it.
If you see an error in someone else's branch, submit a suggestion to fix it, or email them to inspire them to get to it!