Thanks for postin' that website.
I really doubt this, but I might be wrong. He mentions Cherokee in NJ in 1711 and implies that they stayed there. They went there to pay their resprects to a Delaware Chief who had just died it appears, but I'd be willin' to bet once the funeral was over they went back home.
Also there is an implication that the Delaware who united with the Cherokee was some kind of a justification for this NJ or NY group having Lenape and Cherokee. But that is silly, because some of the Delaware in Oklahoma who were sorta forced to unite with the Cherokee after the Civil War isn't related at all to people in NJ who they claimed started mixing with Cherokee in 1711 -- that's rediculous.
The Sandhill Band of Cherokee/Lenape has been documented by Herbert Kraft and Mark Raymond Harrington and C.A. Weslager as residing in New Jersey since about 1730. This is apparently a "knock off" of them or a "copy cat" group. The family names jive with the Sandhill names.