When you say validate I'm assuming you mean the process of verifying the facts, dates, places and relationships documented in this profile ?
https://www.wikitree.com/wiki/Allan-1974
You verify the information contained in the profile by locating reliable sources (preferably from primary records) that support the given facts. You may find additional facts in the process that add to what is already known as well.
Here is one that may help:
"Scotland Births and Baptisms, 1564-1950," database, FamilySearch(https://familysearch.org/ark:/61903/1:1:FM3M-P98 : 10 February 2018), Agnes Allan in entry for Martha Caldwell, 26 Jan 1803; citing GLASGOW,LANARK,SCOTLAND, reference , index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 102,916, 102,915, 1,042,936, 102,914.
Here are others:
"Scotland Births and Baptisms, 1564-1950," database, FamilySearch(https://familysearch.org/ark:/61903/1:1:VQHP-2XK : 10 February 2018), Agnes Allan in entry for Mary Caldwell, 05 Jun 1792; citing , GLASGOW, LANARK, SCOTLAND, reference , index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 102,916, 102,915, 1,042,936, 102,914.
"Scotland Births and Baptisms, 1564-1950," database, FamilySearch(https://familysearch.org/ark:/61903/1:1:FM3M-YYT : 10 February 2018), Agnes Allan in entry for Cathrine Caldwell, 26 Oct 1800; citing GLASGOW,LANARK,SCOTLAND, reference , index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 102,916, 102,915, 1,042,936, 102,914.
A maybe :
"Scotland Births and Baptisms, 1564-1950," database, FamilySearch(https://familysearch.org/ark:/61903/1:1:X19T-H26 : 10 February 2018), Agnes Allan, 10 Oct 1762; citing , reference , index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 102,912, 1,042,934, 990,755.