Doris, I think that I can help you with your inquiry. The following is from "History of Leeds and Grenville" (p. 133) by Thad. Leavitt:
"Ninian McCrea, son of Thomas, was born January 28th, 1822.He married Polly, daughter of Israel Knapp, of Lake Loyada, in the Township of Yonge. Ninian resides on Lot No. 2, of the 1st Concession of Montague."
He had the following chidren: Ninian Franklin McCrea (1856-1932) m. Anna Laura Scoville Frederick McCrea (1861-1909) Harry McCrea (no dates) Hiram McCrea (b. abt 1863) Colonel McCrea (b. about 1860)