After you complete the quest for the first time Mimidoa says this in a cutscene:
"Mimidoa: Wouldn't you agree, 'nitiate? Hmm...speakin' of rememberin', you remind me o' someone. Somethin' about the eyes... Oh, aye! Yer the spittin' image of a lad as once helped me drive back an army o' the undead. A right tough bugger, he was. Like you, only taller.
Mimidoa: Never did find out what happened to him, but lookin' at you, I'm guessin' he settled down an' sired himself an heir or two. Ahh, it brings a tear to me eye seein' you carryin' on the family tradition. I'm much obliged to ye, lad. Much obliged!"
Who is he referring to?