Really? When. Did Lincoln ignore the Supreme Court? When did the Court rule the income tax unconstitutional. And as I recall, Justice Roger Taney, who hated Lincoln with a passion, was Chief Justice then, and his court never took up the case. Why was that?
The SCOTUS ruled every income tax unconstitutional prior to passage of the 16th amendment. Federal income taxes were unconstitutional based on Article I, Section 9, Clause 4 of the Constitution.
As for when Lincoln ignored the Court. See ex parte merryman.