First, you CAN NOT ASSUME that this person died before the 1900 census. She and Finis may have separated for one reason or another.
I did a number of searches in the 1880 and 1900 census looking for "Maggie
Wilkins", "Mag*
Wilkin"(would identify any person whose first name began with "Mag"; I looked for any "Marg* Wilkin*" since many Maggie are really Margaret. I also looked under last name "
Brooks". There were many, many possibilities. The 1900 Census finds a Maggie
Brooks living on the Chickasaw Indian Reservation...but that one was in
Oklahoma and this person was married to an Oscar. Anyone of these persons found "could" have been the correct one. I also looked at all 16 pages of the Uvalde persons in the 1880 Census, but she may not have been there until 1890. There was a Maggie
Kennedy, age 7.
Unless she was only 10 when they married, she HAD to have been alive in 1880; but not necessarily living in
Texas, or even having the name of
Wilkin(s) at the time. Most of the citizens carried Hispanic surnames. BUT, without a date of birth, or even an age identified from the marriage in 1890, it is impossible to work just on names in this manner.
So, your search is first in Uvalde, the town. But, also check records of
Uvalde County. If you have not, see if you can obtain the marriage certificate, or any type of documents, books, information, concerning this Wilkin*, or Finis. Marriage records, divorce records, newspaper records of deaths, disappearances, etc.
If you do have additional information from the marriage certificate, that would help. Also check the names of the witnesses, sometimes they are family members. For example, Maggie
Wilkins is married, one of the witnesses is
Abner Morris. An 1880 census finds
Abner Morris in
Texas, a sister is Margaret N. Morris, the same age as the Maggie getting married. This clue is then further researched and possible family found.
So, if you have any additional information, post it.
Ron Bestrom