Yes, there is a Clan Donnachaidh chief, Alexander Gilbert Haldane Robertson of Struan, 23rd Chief of Clan Donnachaidh.

http://www.donnachaidh.com/

http://scotland.stv.tv/the-gathering...the-gathering/

http://www.youtube.com/watch?v=K5dc0r0XGhg

Virtutis gloria merces,