1. Sadly I am unable to assist you with the identity and locality of the Celebrated WT scholars for I have asked scholar that very same question and all I get is a deep scowl and groan from his cave so I have learnt that it is best to leave that matter rest.
If you truly need spiritual assistance then you should do the following:
Read and medidate on God's Word daily
Attend all Christian Meetings
Regularly engage in the field ministry
Seek assistance from your local Elders
Rolf Furuli is certainly a Scholar and as a Witness he would properly be identified as a WT scholar but whether he is of that elite group of scholars centuries old, celebrated WT scholars, I simply cannot say.
2. Biblical or Bible chronology is simply a chronology that is based upon the Bible and contains a tabulation of dates connected to events of the Old and New Testament beginning from the Creation of Adam to the book of Revelation. It owes its genesis to the esteemed work of Archbishop James Ussher whiose chronology was presented as a marginal reference in the King James Version of 1611. In order to reconstruct such a chronology a methodology utilizing secular data is required in order to establish key pivotal dates or formerly Absolute Dates thereupon biblical events and regnal data are employed in the construction of such sacred chronology.
You are correct in saying that secular data is essential but the chronologist wisely ensures that any secular data use must not contradict biblical data for biblical data must have primacy over secular data. In other words, just like salt is used sparingly so secular data or chronology must be used sparingly and not at the expense of raw biblical data.
I hope this information helps