Interestingly, Mearl Joy Wyne, who married Paul Oscar Walter Kreuzer in Texas (they lived in Brazoria County and are buried in Manvel) and her sisters, Cora and Winnie Lee are listed in a 1920 US Census as being the adopted children of John C. and Eliza C. (Wampler) Wyne in Harris County, Texas.
John C. Wyne was the son of John C. Wyne and Elizabeth Ziegler and was born Nov 19 1865 in Rockingham County, Virginia. Eliza C. Wampler was born Feb 18 1862 in Rockingham County to Joseph and Lydia Zigler. Lydia and Elizabeth were sisters.
John C. and Eliza C. Wyne moved to Texas after their marriage in 1889. In their 1910 US census it was only them and a servant. In a 1920 US census report they listed three adopted daughters:
Mearl was born about 1903 Cora was born about 1904 Winnie Lee about 1907
Winnie L. Wyne appears in the 1930 US census twice; with her adoptive parents and in the household of Mearl and her husband. John C. Wyne's 1941 death certificate was signed by a Mrs. Winnie Lee Collins. This is all I have on her so far in my research.
Cora is not listed in the Wyne's 1930 US Census so may have already married. Mrs. E. C. Lemmons signed Eliza C. Wyne's 1944 death certificate - I am assuming this may be Cora's married name. But that is how far I got in researching her.
I have no idea who their birth parents were. On the US census it is listed all three were born in Texas and there is a one or two possibilities on FamilySearch.org among 1910 US Census reports for Mearl and Winnie ... but I don't knowif the girls were related before adoption, if only two were biological sisters, or not related at all before adoption. From what I have come across, it does not appear that John C. and Eliza Wyne had children until they adopted.
Around the same time, in California, Lydia Wyne (John C. Wyne's sister) and her husband, Sprankle Snyder, were starting to adopt children - think it was 3 they adopted while Sprankle was alive and Lydia adopted one more after his death. Sprankle had 3 sons from his 3rd marriage - Lydia was his fourth wife (first marriage for her) and she didn't have children until adopting.