What's the difference between Ralph Baker and Ralph W. Baker Jr?

here's a screen shot from the ACRIS web site (Automated City Register Information System for NYC). Note in 7/27/2006 the owner of 120 south Eliot st's name change from Ralph Baker to Ralph W. Baker Jr.

This is when Ralph Baker, the blind Photographer realized someone took a 600,000$ mortgage out on his property. When he went to the D.A. with this issue and instead of getting help with this problem, he was thrown in Rikers and the article below came out.
http://therealralphbaker.blogspot.com/2012/10/ralphs-bad-real-estate-press.html