Not my ancestor.
McMannis William 14 Feb 1901 Liber 649 Page 196
"New York, Probate Records, 1629-1971," images, FamilySearch (https://familysearch.org/pal:/MM9.3.1/TH-1961-28617-22944-40... : accessed 21 Aug 2014), New York > Wills index 1662-1910 vol I-Mc > image 530 of 553.

Mentions sister Bertha Griswold, wife Gertrude Putnam McMannis (executor 1), daughter Gertrude Putnam McMannis , niece Gertrude Lee Berry, friend Geo E Nostrand (executor 2), friend Caleb W Cameron (substitute executor)

"New York, Probate Records, 1629-1971," images, FamilySearch (https://familysearch.org/pal:/MM9.3.1/TH-1961-28687-28238-77... : accessed 21 Aug 2014), New York > Wills 1900-1901 vol 648-650 > image 158 of 592.