I don't know if you have this information yet or not but I hope it helps.
The 1935 Florida state census lists his parents and siblings as follows:
Name: Fred Watts
Birth Place: Georgia
Est. Birth Year: abt 1920
Relationship to Head: Son
Father's Name: Barney B Watts
Mother's Name: Flora C Watts
Census Year: 1935
Locality: Precinct 37
Archive Series #: S5, Roll 14
Barney B Watts 43, 7th grade education, insurance agent
Flora C Watts 40, wife, 8th grade education
Barney O Watts 21, son, 7th grade education
Louise Watts 19, daughter, 10th grade education
Johnny E Watts 17, daughter, 9th grade education
Fred Watts 15, 6th grade education
Ella C Watts 7
Jack H Watts 4
Family was renting at:
405 Johnson street, Plant city, Florida
re: cemetery records
Fred is buried in Block 040A Lot 01 Space 8.
Louise WATTS WIGGING is buried in Space 1. DOB 08/26/1915 DOD 10/19/1987 Int Age 72
Spaces 2, 3, and 4 are empty.
Barney O. Watts is in space 5. No DOB but DOD 10/21/1953.
Space 6 is empty.
WATTS, CAROLYN ODOM is in space 7, DOB 09/17/1894 DOD 08/11/1948 Int Age 53
Florida marriage records
Louise Watts to W.H. Wiggins, Pasco county, Florida 1937
Barney O Watts to Edna Mae Ward, 1937, Pasco county, Florida
Barney O. Watts to Carmen Diaz, 1943, Hillsborough county, Florida
1945 Florida state census
Census Year: 1945
Locality: Precinct 65
Archive Series #: S1371, Roll 23
Wiggins, W. H, 32, born alabama, Insurance salesman
Louisa, 29, born Georgia, housewife
Billy, son, age 5
Barbara Gail, daughter 3