This is the symbol of House Redoran: http://t2.gstatic.com/images?q=tbn:ANd9GcTQVhrO-A_xVzISRqzDdgcHRxNZLpWtATw_Vkl4jrJ5iFeXuS9xbA

This is the symbol of House Dagoth: http://t3.gstatic.com/images?q=tbn:ANd9GcSmp2LqRKdDXRjxpzLeFqPMafxKP-KG4nZU6yutSx5d0cnBJjt9dA

And this is the symbol of Lorkhan, from the MW concept art book: http://www.google.co.uk/imgres?imgurl=http%3A%2F%2Fwww.imperial-library.info%2Fsites%2Fdefault%2Ffiles%2Ftdgtd_dwemer_lorkhan.jpg&imgrefurl=http%3A%2F%2Fwww.imperial-library.info%2Fcontent%2Fdefinitive-guide-dwemer&h=292&w=200&tbnid=25C60Deyq7n8SM%3A&zoom=1&docid=4JSURersErCNjM&ei=Lfu_U5u2IsqlyATqzoHIBg&tbm=isch&client=opera&ved=0CCEQMygAMAA&iact=rc&uact=3&page=1&start=0&ndsp=39 ( It may be debatable that this picture depicts the symbol of Lorkhan but I also have read somewhere on this forum that Lorkhan is associated with shalk.)

I do know about the special place which Lorkhan has in Dunmer culture. But I don't understand, why House Redoran, of all Houses, took Lorkhan's symbol as the coat of arms. It doesn't seem that Redoran has any particular interest in the "Lorkhan's test" and Psijic Endeavor.

And why House Dagoth coat of arms is, in fact, a part of Redoran's emblem.

Is there an explanation?