A little more information would help those unfamiliar with the area.
(1) Background:
Farmerville/Downsville is in Union parish, LA.
It is within 30 miles of Lincoln and Ouachita. Union parish is also bounded by Morehouse and Claiborne parish, LA, and Union County, Arkansas.

(2) Known information
A Willis Hendricks died in Union parish in 1935. His death record is on file at the Louisiana State Archives.

A brief Census History 1930-1880
1930: Willis and wife 'Jane' are are still in Union parish with a niece, surname JONES, and grandchildren, surname 'Wayne'.

In 1920, Willis and Jane Hendrix are in Union parish with two of their sons, Lonie and Starling.

In 1910, Willie and Jane Hendrex are in Union Parish with 9 of their children. They have been married for '35 years' and have 15 living children (of 18 born).

In 1900, Willis and Jane Hendrix are in Ward 5 of Union parish. They have been married for 30 years and have 14 living children (of 17 born). Both were born in Louisiana, per the census.

In 1880, Willis and Jane are still in Ward 5 of Union parish with 5 children. A 67 year old 'mother', Matilda, is in the household. She was born in AL.

In 1870, there is a 13 year old Willis Hendrick living in Ouachita parish, in the household of a 'Lewis' family. Don't know if this is the same Willis, but the birth year appears about right.

** Perhaps a search for 'Matilda' will show another Willis and/or siblings.

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(3) Other resources
You could search marriage and death records for maiden names.
Search for a death record for any of Molden's siblings. Is the mother's name the same? If not, could 'Jane' have been 'Harriet Jane'? Could Jane have been a nickname?

Also look for marriage records for the female siblings. Finding their married names will help locate them in the census and in the death index.

Don't overlook Arkansas. Many of my North Louisiana relatives also moved back and forth across the border.

I am also researching in the Union parish area.
Although I do not know if a direct connection, I have one living relative that surname. I'll contact her and see if she remembers Willis and/or Jane or any of their children.
Downsville was a small community.