There is also the indo-pakistani name "Hariar," which also has an ancient Norse meaning of 'warrior' or 'army'.
http://www.nordicnames.de/pojk_a/-ar.html


In Maithili it means "green."
http://www.lisindia.net/Maithili/Maith_struct.html

I infer it may also mean "sprouting" or "greening"
http://ling.lll.hawaii.edu/faculty/stampe/AA-pj/murmu-santals-bangla-desh%3Bsantmarcen_files/santmarcen.html

Perhaps it could mean something like "the end growth potential."
Wild guess.