Phebe Walling's parentage

There seems to be some conflicting theories as to which Phebe Walling is the daughter of Inman and Susannah (Aka Anna, Amy) Smith Walling. Inman was born about 1735 in New Jersey and died in Minisink, Orange, New York, his wife, Susannah Smith was born 1749 in Minisink, Orange, New York and died about 1810 also in Minisink. They had a daughter Phebe born in 1775 (I have seen March 31, May 1, and May 31). The following Phebe Wallings are claimed to be the daughter of Inman and Susannah Walling.

1. Phebe Walling is listed as being married to a Seth Wickham (1765-1839). They are found in the membership rolls of the First Baptist Church of Wantage, Sussex, NJ in 1795. This church also records as their founding members, Inman and Amy Walling in 1783, this offers some support that this Phebe is Inman's daughter but this is not definitive proof. This Phebe is listed as dying bef. 1804 in Wantage, Sussex, New Jersey. She had at least one child with Seth, Moses born 1802.

2. Phebe Walling is listed as being married to Elisha Hammond, Marriage date about 1791. Had at least 13 children with Elisha between the years 1792 and 1820. They lived in Hardiston, Sussex, New Jersey. After her husband Elisha died in 1834, Phebe moved to Oakland County, Michigan with several of her children. She died there in 1843-- some records read 1848. Her gravestone is in Oakland, MI.

There are other Phebe Walling's living at the same time in the same vicinity. There is a Phebe Walling born about 1797 who married a John Brady in 1813 in Wantage, Sussex, NJ, they later moved to Ohio. There is Phebe Walling born 1749 to Joseph Walling [Inman Walling's brother] who married Jacob Chambers/Shimer. This Phebe Walling also died about 1803 in Montague, Sussex, NJ. So there are plenty of Phebe Wallings to conflate and confuse with one another.

I have not been able to find a probated will of Inman Walling nor from his wife, which may indicate which Phebe Walling is his daughter.

So, it is obvious that Phebe Walling who married Seth Wickham and Phebe Walling who married Elisha Hammond cannot both be born in 1775 and be the daughter of Inman and Susannah Walling? So which Phebe Walling is their daughter? Substantiated documentation please--not just family trees--there are plenty for both. And regardless of which one is Inman's daughter, whose daughter is the other one? Thank you. Fred L Hammond (obviously hoping Phebe Walling Hammond is the daughter). Again thank you in advance.