There is a big argument on whether Shah Dynasty is of Magar origin. Their facial feature and kul devata puja practice points they might be Magars. DNA test on Geanology will answer this question and many other ethnicity questions over time. Some time back I have read about a Dutch company trying to profile all the ethnic groups in the world and see how they are related.

But any how he is responsible for existence of Nepal and as such father of country, even though when he conquered basically it was for more land and money like any other conqueror of the world. and off course he did not conquer 2400 countries it was some countries of 22 (baise) and chaubise (24).