Notes for Sintha Belcher: A record of Sintha and Ace Aliff is found in the 1880's Logan County WV census.
Household: Name Relation Marital Status Gender Race Age Birthplace Occupation Father's Birthplace Mother's Birthplace Jas. CHISTAIN Self M Male W 80 WV WV WV Ann CHISTAIN Wife M Female W 75 WV WV WV Ace ALIFF Other M Male W 50 WV Laborer WV WV Sintha ALIFF Other Female W 22 WV Servant WV WV
Source Information: Census Place Triadelphia, Logan, West Virginia Family History Library Film 1255406 NA Film Number T9-1406 Page Number 306D
It appears that Ace was a Laborer on James and Ann Christian's farm and Sintha was a servant to them.
Sintha appears again in the 1910 Logan County census. Asa must have died before this date.