I know I'm late to this thread, but I am descended from Amanda Allen and Oliver Ide and have been trying to find information on Amanda's parentage. I'm intrigued by your more recent lines of research.
Amanda is often listed as the daughter of Samuel Allen JR and Martha Drake, but if so, Samuel would have been 17 when she was born and no more than 15 when he married, since the son Samuel and Marcy is said to have been born in 1782.Also, the Ide lineage written by Silas C Ide makes a big to-do of the allied Allen lineage (Samuel and Marcy Otis Ross Allen) and their intermarriages with the Ide family but does not link Amanda to it - leading me to think she must have been from another Allen family.
Her birth date (supported by subsequent census entries) is given as 1799 in Pittstown, NY (Rensselear Co.), which I cannot reconcile with the arrival in Luzerne Co. of Samuel Allen-Marcy Otis Ross.
I would like to know if you've made any more progress in your research since these 2002 postings or if there is any information I can share.