Two Lyndon Station brothers, Dan and Don Coughlin, were in a Juneau County courtroom Tuesday afternoon for their arraignment.  Both men are charged with multiple counts of sexual assault of a child.  47-year old Dan Coughlin plead not guilty to four charges.  54-year old Don Coughlin stood mute on each and every one of his 23-counts.  Assistant Attorney General and Special Prosecutor Dennis Krueger had filed additional information with the Clerk prior to the arraignments.  The Court set a telephone scheduling conference for both men for April 26th.